Helen makes the first move.

Before Natalie could even register that it wasn't Adam that had just spoken, her body jerked backwards as Helen's spirit careened into her.

"No!" Natalie yelled as her arms flailed back. "Not again!"

Adam went to step closer to Natalie, but quickly jumped back as the redhead swung her limbs around dangerously. It looked as though she was fighting against a swarm of invisible insects as her panicked movements sent her colliding into the desk and chair. The spellbook had already tumbled from her arms and Adam attempted to scoop it to safety whilst avoiding Natalie's kicks. He was successful, but got a kick to the chest for his troubles.

Glancing at the spellbook in his arms, Adam felt a unnaturally large wave of relief wash over him as he noted it was undamaged. Looking back up, he noticed that Natalie had finally stopped her struggling. She stood perfectly still, her arms by her side and her head bowed to her chest. Her ginger ponytail had unravelled and her long locks covered her face completely.

"Natalie?" Adam said quietly.

"Not anymore," came her response. Her head lifted up from her chest and a hand brushed her red hair from her flushed face. "She put up a fight, but I managed to put her mind to sleep."

"What did you just do?" Adam asked urgently.

"What I had to! To save us and the spellbook from being held captive by your ex," came Natalie's voice. But Adam knew it couldn't be Natalie that was using her voicebox. Helen had clearly won the tug of war for control.

"But I literally just promised her we wouldn't do that!"

"So we'd just let her keep the book and then what? You think she wouldn't try and get back at us? I seem to remember you saying she could be pretty irrational when you were together."

Adam had no rebuttal to Helen's last statement. Instead he stared at the body of his ex-girlfriend which was now inhabited by the mind of his current one. He hadn't really taken in Natalie's appearance earlier in the park; he was too worried about whether she was conscious of what Helen was doing. Now he had the time to recognise how frustratingly beautiful she still was. The fact that she was wearing running gear, sweaty and dishevelled somehow added to her attractiveness.

"I'll take that as you accepting I did the right thing then?" Helen said with a touch of venom to her tone.

Still Adam stayed silent. His eyes darted across Natalie's body. She was quite a bit taller than Helen and certainly broader. It was apparent she had been exercising more since their break-up as she was no longer pleasantly plump but had the figure of an athlete. Adam felt something stirring in his pants as he realised Helen was waiting for him to respond.

"You're right," he finally admitted. "I saved the book by the way. I was worried you, or maybe Natalie I guess, might stomp on it." Adam held the book up to Helen as if holding a gift to appease an angry monarch.

"Thanks," Helen said flatly as she scooped the book from Adam and clutched it tightly to her chest. "Hopefully I can find a spell to solve our Natalie problem. I don't fancy being stuck in her body forever." Helen placed the spellbook on the desk and began flicking through its thick, yellowing pages. Adam couldn't help but notice that the way she was leaning on the desk gave him the perfect view of Natalie's arse and legs.

"Would that be such a bad thing?" he whispered quietly to himself.

"What was that?" Helen said, not turning away from the book.

"I said, do you need to look into that right now? You haven't really gotten to experience what it's like to be in someone else's body yet? If you know what I mean..." Helen stopped her browsing of the spellbook and turned to face her boyfriend.

"I suppose you're right," Helen sighed. She turned away from the book and gazed deeply into Adam's eyes. Helen sashayed her way over to her boyfriend and wrapped her borrowed arms around his waist. "I've thought about you a lot since we broke up, you know. Since you discarded me for that little blonde bitch."

Adam's eyebrows raised in response to Helen's words. She had slipped into the role of Natalie just as she had done with Zoe back at the pub. This time he had a feeling he was going to enjoy the roleplay.

"I've missed you too," Adam replied without thinking. "But not too much, because Helen is lovely!"

Helen laughed at Adam's panicked words and gave a sexy wink. "She is, isn't she? But you've missed some of the things I can do, haven't you?" Helen reached between Adam's legs and grabbed his already rock hard cock. "What would you like me to do then?"

"Why don't we go to the bedroom and I'll tell you?" Adam glanced over at Helen's unmoving body still slumped in the desk chair as he spoke.

Helen followed his gaze and giggled. "Don't fancy having fun with your girlfriend in the room? Fair enough. Why don't you show me the way?"

Helen held out her hand, which Adam gladly took. He felt a buzz of electricity at holding the hand of his ex for the first time in years. As they both entered the room, Adam found himself pushed back to sit on the bed. He stared up into Natalie's eyes and was certain he could see the glint of Helen behind them. Adam eyes trailed down to look at her toned arms and legs that still glistened with sweat.

"What do you think of my new figure?" Helen purred as she sat herself down in Adam's lap. "I've been working out since we broke up. My body's better than its ever been. Aren't you upset you dumped me?" Before Adam could respond, Helen began to kiss the nape of his neck. He wrapped his arms around her and pulled her in for a passionate embrace.

Their tongues lashed together as they kissed. Adam's hands exploring a body that was somehow so familiar and yet so new. Helen's hands pulled off Adam's shirt whilst his hands played across her body as he breathed in a once forgotten scent. Adam tugged Helen's sports bra and top up, Helen lifting her arms to allow him to get it off. Adam tossed them across the room before appreciating the breasts he had revealed. They weren't the small, pert breasts of Helen's that he had grown used to, but the juicy, teardrop shaped bosoms he had secretly missed.

His target locked, Adam began to kiss down Helen's neck, biting and licking as he went. He savoured the saltiness of her perspiration. Helen sighed happily as Adam kissed his way down to her stolen breasts. He took a nipple in his mouth and let his tongue tease its tip. He then changed to gently nibbling on it as he readjusted his arms to slide down her back. Finally, Adam's hands slipped down Helen's shorts to grip her firm arse. Her head flicked back sending her red hair arcing above her and cascading down her back.

Eager to assert some control, though enjoying the attention of Adam's mouth, Helen pushed Adam away and dropped off his lap to her knees. She deftly unbuckled his belt and tugged down his jeans. Eagerly, Adam's dick sprung up to attention eliciting a soft giggle from Helen.

"I haven't seen this cock for too long," she said lustfully, continuing to play the part of Natalie. She took Adam's dick in her hand and began to lick and kiss at its very tip. Slowly, Helen took the entirety of its head into her mouth before sliding down his entire length. She had taken most of him in but started to struggle not to gag. Adam was apparently oblivious to this as he happily let Helen work his cock with her mouth and tongue. Soon he was unable to hold himself up, and Adam allowed his body to fall back onto the bed. After a few minutes of the best blowjob he'd had in years, Adam knew that this couldn't continue or Helen would be left wanting.

He pulled his body up and encouraged Helen to stop her heavenly oral activities. She smiled and wiped the mixture of precum and saliva from her lips. Without a word, Adam helped Helen up and bent her over the bed. He eased her shorts and knickers down, smiling at the tight, but still pleasantly plump arse he'd revealed. Adam sent a probing finger down to Helen's borrowed pussy and happily found that she was already sopping wet. He couldn't help but bring his moist finger to his mouth and taste the bitter juices he'd given up years ago. If only his relationship with Natalie had been as good as the sex. Perhaps with Helen in control he'd have the best of both worlds...

Returning to the present, Adam worked his dick up and down Helen's slit, slowly teasing her. By now, Helen was dripping wet and starting to moan softly. She tried to ease herself back to guide Adam's cock inside of her. He allowed the tip to slip in but quickly pulled back out to slide his length over the lips.

"Just hurry up and fuck me!" Helen yelled in a startlingly familiar tone. Her head spun round and shot a wicked look equal parts furious and horny.

Realising he had toyed with her long enough, Adam rammed home the full length of his cock.

"Oh fuck, you're just as big as I remember!" Helen moaned as Adam began to work a steady rhythm. He eased his length almost all the way out before firmly ramming it back in. Adam leaned down with his right arm and found Helen's jiggling bosoms. He started to tweak and pinch at her nipples as he picked up the pace. Helen's sweaty behind bounced with each thrust and Adam could feel himself getting close to the point of no return. He closed his eyes and continued to plough the athletic body of his ex-girlfriend. The thought of this mixed in with the fact that Helen was actually in control was something verging on a dream come true. Helen's moans were starting to get louder as Adam pounded at his steady pace.

"Oh God, yes!" Helen yelled. Adam could feel her pussy tightening around his cock. "Fuck me deeper baby!"

Happy to oblige, Adam placed his hands onto Helen's hips to help him ram into her more fully.

"Fuuuuck" Adam groaned as he had to battle the urgent feeling that was working its way from his balls.

As if on cue, Helen's body began to convulse. "Ooooh God! You fucking king!" she cried so loudly the whole bloody neighbourhood could hear. No longer needing to hold back, Adam picked up the pace and slammed into Helen's cunt. Before long, he was erupting inside of her pussy. The **** of Adam's thrusts sent him rocking back on his feet a little and he struggled to stay upright. Helen writhed on the bed and turned herself around to see her boyfriend jerking his dick off to completion, the final jets hitting her surprisingly toned stomach.

"Fuck me, you look hot," Adam declared in his post-orgasmic daze. He looked down at the glorious image of his ex-girlfriend's ravaged body with his cum dribbling out of her pussy. Her naked skin was even sweatier than before and her ivory cheeks flushed with red.

"Thanks," said Helen between deep breaths. She shook her head slightly and rolled her eyes. "This is only a temporary thing though, remember?"