19: The girl next door

Felicia observed Mia as she started warming up. While her figure was a little boxy for a girl, she couldn't find any fault with it. With her hair messily combed to the front, Mia gave the impression of a girl with a lot of insecurities, who wanted to stay hidden and live in the background.

But contrary to what Mia would've thought of herself, Felicia felt Mia was a hidden gem. In fact, her soft but bubbly lips and slightly thin face, highlighted her cheekbones well, giving her a cute model's appearance. Even though she didn't have any makeup on and was dressed rather sloppily, Felicia was sure Mia would look pretty.

Felicia was well aware of how recent trends and social settings had pushed forward a more shapely figure as more attractive over the others. 'While it is important to stay fit and healthy, it should not come out at the cost of hating one's own body,' she firmly believed.

"Mia, are you all warmed up?" Felicia asked, watching Mark running on the treadmill.

"Ye-yes," Mark responded stopping the treadmill, catching his breath. Hearing how she addressed him, Mark immediately understood it was Sarah's work. Although it would be a bit embarrassing, Mark decided to correct her. "Listen, Felicia, I know...how I appear maybe -" Mark started to explain nervously, still catching his breath.

"Mia, don't worry. Your friend already told me everything." Felicia interrupted.

"Wait, what? She did?" Mark stuttered.

'Did she really tell Felicia that I was a guy? God, did she say that to embarrass me and have me kicked out?' Mark got scared thinking of all the ways it could end badly. While Mark wanted to tell her, he wanted to put it delicately so that he didn't come out as a pervert. Knowing Sarah, he was sure she would've done just the opposite.

"Yes. You don't have anything to worry about. You are perfectly okay how you are. If you have any concerns please talk to me. " Felicia assured. "Now, let me show you the gym area."

Mark was beyond surprised at how well Felicia had taken it. He soon followed Felicia as she showed and explained all the various equipment before finally leading them to the locker room, showing his assigned locker, washroom and shower. "You can wear your regular clothes and change in and out to workout wear here as well. Now that we are done, let me quickly change before we start our workout." Felicia said before starting to strip down naked.

Mark couldn't help but blush and stare on seeing the perky and tight body of the fitness instructor. It was only when he made eye contact with her did he turn away.

"There is nothing to be embarrassed about. It's just us girls here." Sarah quipped seeing the shy girl fidget around. Grabbing her tracksuit from the locker, she started putting it on. "Besides, even before starting our workout, I want you to understand that lesson one is being comfortable about your own body. You should never be ashamed of how others see your body," Felicia tapped Mark's back gently, cheering him. "Come, let's get started now."

As Felicia continued to lead him back, he couldn't help but think how worse the situation suddenly became. 'Sarah didn't tell her I was a man! What the hell did she say then? Fuck! If I tell her now, she will definitely beat me up before throwing me out. Dammit! But who strips naked in front of another person!' Mark shuddered.

'It's just workout right... It's not like I am going to see her anywhere outside. I think it's maybe better to continue to let her think I am a girl. It's not like I am going to see her anywhere outside anyway. Besides, whether it's for a man or a woman, in the end, it's just about building muscles, right? There shouldn't be any harm in not telling her.' Mark convinced himself. 'It's just a plain harmless lie.'

"So, we'll start working out with some basic exercises to increase your stamina and then focus on individual muscles. Is that okay, Mia?"

"..."

"Mia?"

"Ye-yes."

As Mark finally settled his thoughts, Felicia soon started explaining the fitness regime - 2 km run followed by 2 sets of squats, curtsy lunges, donkey kicks, lateral band walks & glute bridge for the lower body; incline chest press, push-ups, dumbell pullover and medicine ball toss for upper body - all the exercises spread over the week so that it won't be too exerting. After building up stamina and muscles slowly, they would then slowly start increasing weights and sets.

From how much Mia had stared at her naked body, Felicia was able to tell how badly she wanted to transform from her boxy frame to a more curvy and hourglass figure. The fitness regime was planned solely to focus on and develop her glutes and pectorals, to make her ass more round and breasts more perky. Felicia soon started to write down a diet plan that Mia could follow to further help in her goal.

While some of the exercises seemed a little embarrassing, Mark decided to push forward without any questions as she was the expert. Just completing a few sets already left him exhausted and horny.

It was as if each exercise was pushing his libido harder and harder. If the curtsy lunges weren't embarrassing enough, the donkey kicks basically exposed his entire backside making him wonder if Felicia could see the impression of the anal plug through the skort. As more people started to enter the gym, Mark couldn't help but be even more conscious.

Every time she went behind his legs to lift his leg further up, he could feel his dick trying to get hard in the cage. Just the thought of being seen left him completely aroused.

By the time they were halfway done with squats, Mark was already on edge, ready to cum. Each time he squatted and got up, he could feel the plug poking against his prostate.

"One more to go, Mia. Come on, you can do it!"

"Ah~ ye-yes!" Mark panted.

The moment he bent down for the last squat, he was done. His legs had already lost strength. He fell on the floor on his ass, cumming in his skorts.

Mark quickly put his head between his knees as he succumbed to the pleasure, moaning softly.

"Are you okay?" Felicia inquired seeing the weak girl sitting on the floor. She was aware that Mia got timider as more people entered the gym. Seeing the girl hiding her face just for failing a workout made her realize how diffident Mia was. "Come on, it's ok. Get up. Why don't you go to the locker room and wash away your sweat? We can pick it up tomorrow." Sarah encouraged trying to lift the shy girl up.

Seeing the tear-filled eyes of the girl in front of her left her stunned. Felicia couldn't believe how much self-blame the girl was showing just because she messed up a simple exercise.

Meanwhile, Mark couldn't believe he just came in his skorts. He was sure that the inside of his skirt was filled with cum. Hearing Felicia's offer, Mark decided to quickly wash up a little before leaving.

Parting with her, he quickly left for the locker room. After making sure it was empty, Mark lifted his skirt up, trying to wash the stain away by gathering water in his palm and splashing it against his crotch. As it became more and more tedious, he remembered that the showerhead they had here was the removable type, wherein it was possible to use it as a handheld unit as well.

Ditching the wash basin for a faster solution, Mark quickly pulled down his skorts and ran to the shower, washing the crotch area of the skorts, all the while being careful not to spray it with too much water and wet the skirt.

Just as he was done, he heard a familiar voice calling from behind.

"Miss, this is the men's locker room.."

Turning around he could see the well-built body of his rival and errand boy."Derrick?"

"Mark?"

Meanwhile... In a dark and messy bedroom, a notification flashes on the phone, placed on the side table.

"Cardmember, Payment of xxxx$ completed successfully at Platinum Gym. Available Balance: $90.75."

On reading the message, Kate let out a long sigh. Before the start of the college year, Agatha had given Kate access to Mark's bank card and account for monitoring. The six-digit sum that could've lasted for an entire year or more for an average student was spent within just a few months. More precisely, from his account statements it was clear that it was reduced to this state over the past few weeks, and that too all on clothes, shoes and even at adult toy shops.

Just from the brands and timestamps of the purchases it was clear that it was all for his new girlfriend: Sarah. Kate had already done a background check on Sarah and seeing her poor financial background, she was sure Sarah was the gold digger type.

Kate never liked any of Mark's previous girlfriends but they all had left him so fast that she didn't have too much to worry about. Sarah on the other hand, didn't seem like she was going anywhere recalling her last meeting.

Letting out a deep sigh, Kate messaged Sarah to meet up.

'It is better to nip them in the bud rather than waiting for it to fall out miserably later.' Kate reckoned.