you were shocked to interrupt Sarah & Robert having sex

You had grown to enjoy spending time each week with Nancy, now finding yourself really looking forward to Friday nights. Nancy was smart and funny - and rather assertive, not hesitating to say and do what she wanted. And she was quite striking looking. You didn't notice just how attractive she was at first but as your 'date nights' continued, she started dressing up more. Tonight she wore a short black dress that showed off her still amazing legs, and was just low cut enough to give a tantalizing hint of her large, firm breasts.

She drank more at dinner than usual, sliding up next to you while constantly touching your hand, arm and even thigh. She complained at the chill in the restaurant, pointing out the goosebumps on her bare arms and shoulder. You found yourself offering to help, so she scooted closer and draped your arm around her shoulders. You thought you should feel more uncomfortable at the situation - you were getting very close with an attractive woman who was clearly interested in you. But you kept getting lost in the scent of her hair and the feel of her body against you. You missed having this intimacy over the last several months and, even though she wasn't Sarah, you desperately needed it.

After dinner you continued to enjoy each other's company over another glass of wine and dessert. Your conversation grew quieter and more intimate, your faces barely apart. But the spell was broken when Nancy finally kissed you. At first you started to reciprocate, desire overwhelming your hesitation. Then you remembered your wife, Sarah, and broke away. "I...I'm sorry," you stammered. "I can't...Sarah..."

Nancy sighed softly and gave a wry smile. "No, Jim, I'm sorry. I push too much." She sat back to give you some more space but at the same time reached out to take your hand. "I like you ALOT. And I think you like me. But I know you're still struggling with the loss of your wife. So I'll be patient. I don't want to ruin this, okay?"

You just nodded, afraid to say anything that might raise questions. You settled on "Thank you Nancy. I DO like you...I appreciate you putting up with this."

Surprisingly your rejection didn't put a damper on the rest of the evening. Nancy recovered smoothly and, while still very friendly and affectionate, tried not to be overly intimate. You hung out in the restaurant for another 45 minutes, getting some coffee to finish up, and then headed back to Robert and Charlotte's to drop Nancy off.

The house looked dark when you got there. "I guess they're already in bed..." Nancy said. "I know Charlotte has been pretty tired - she only has a month or so left." You acted the gentleman and went around the car to help her out. She smiled and kissed you on the cheek. "Walk me in for a nightcap?" she suggested. "I promise I won't try anything," she teased.

You chuckled, appreciating her ability to defuse any tension with humor. "Certainly, my lady," you answered, offering her your arm.

Nancy unlocked the door and you both walked in. "Give me one moment," she asked. "I need to freshen up." And she went to the half-bath down the hall.

You wandered toward the kitchen while you waited, then paused as you heard sounds from the living room. "Here, I'll help you take it off. It'll make this much easier," you heard Rob's say. Charlotte's (Sarah) voice murmured something about "...I guess you've seen all of me before...". You walked over to the doorway and stopped, stunned by what you saw.

It looked as if Robert had been giving Sarah a backrub and was helping pull her dress off. You stood back just out of sight.

Within a few minutes she was standing completely naked. His hands moved from her back to under her breasts, gently cupping and massaging them. Her eyes closed and she sighed in pleasure. "Just think that's OUR baby. We've created this life inside you." Her hands dropped to hold her belly and she said "I know...it's amazing....

She turned around and they began kissing. You wanted to call out and interrupt, but something held you back. Maybe you were in a state of shock? Or maybe a part of you was turned on by watching your wife now Charlotte making out with her new husband.

Somehow Rob managed to get out of his clothes without stopping. They both made low moans as they kissed and fondled each other. "God, I've missed this so much. Sleeping with you every night but holding myself back. I want you so badly Char."

Sarah didn't pause. "Yes...yes... call me your Char... Charlotte." She pushed Rob onto the sofa and climbed onto his lap. "This body needs this... I need this ... want this!" she gasped as she maneuver his dick into her. "Oh God!" she cried out, rocking back and forth on him while he sucked on her engorged breast.

"Jim? What's going on?" you heard from behind you as Nancy walked up. "Oh...." she said in surprise when she looked in.

Sarah heard her speak and looked at you over her shoulder.

She sat up, still on Rob's penis. "Jim? Nan...Mom?" she said, barely catching herself.

You shook off your dazed state. "I, uh, I..." you stammered, stepping back. "I'm sorry!" you blurted out, then quickly walked down the hall and back out the door.