"Babe, I need to talk" Alexis said as David slid into bed next to her.
"What's on your sexy mind Lexi?" He said as he moved over to her and began kissing her neck.
She giggled lightly and said; "Well sexy IS the thought."
"What do you mean love?"
"Well, this evening while I was making dinner and we were all hanging out I started having thoughts. Thoughts about Steven, and they don't seem to be going away"
David suppressed his smile but he also felt his cock begin to respond. "Lexi, get specific, really fucking specific."
She laughed; "Ok, thank God this is a turn on for both of us. I was looking at Steven and all I could think about was what it would be like to, well what it would feel like, look like and be like to.." She paused. She bit her lip and the seconds ticked by as she just looked into David's eyes and raised her eyebrows.
"WHAT? Jesus don't leave me hanging like this Lexi"
She smiled and grabbed his arm. "I can't stop thinking about what it would be like to actually give Steven, my son, our son...."
She paused for a moment, looked around the room and continued almost in a whisper;
"a Blowjob."
"Oh my God! I am so disturbed and fucking turned on at the same time. I thought you said you 'knew" you couldn't actually cross that line?"
"Oh, I know, I am not saying I want to I am just saying I can't seem to stop thinking about what it would be like. I need some kind of relief valve so I can drive a car without rear ending someone because I am such a SLUT that I am continuously distracted by the thought of going down on my own son."
Though slightly distracted by the fact he could now feel his pulse in his erection David asked: "What do you mean by a distraction?"
"Well, you remember that very nice, very geeky boy who tutored Steven for his SATs and French class last year?"
"Mitchel Wheeler?"
"YES! He was such a cutie, he clearly had a crush on me, was very bright and I am willing to bet he probably still hasn't kissed a girl."
"I remember, yes he definitely had to pretend to not check you out but that sounds a little dangerous to me."
"I have thought about it, he goes to that magnet school so he and Steven never cross paths, his mother is a single parent and he's got two younger sisters, which keeps his mother busy. Don't you remember I had to drive him around when he was helping Steven because his mother was busy shuttling the two girls around?
"The last time you fucked an 18 year old it was incredibly hot to watch but I wouldn't be able to do that this time." David paused and looked into the distance; "Of course it would still be hot as hell."
Alexis reached for his cock and began stroking it; "Baby, if you let me play this game I PROMISE I will make it worth your while."
"IF we decide to do this, how do propose to make this happen?"