I take my cock out

I follow the gentlemanly option, and resist the temptation to push my cock all the way into Millie's pussy, and instead I slide it out of her pussy, and climb off her. Millie sits up, and I sit down next to her.

We just sit there for a while, looking out over the lake, neither one of us saying anything for a while, but then Millie breaks the silence saying:

"It was an accident. We were just playing around, and it just slipped on and you took it straight out."

She says it as a statement, not a question, so I don't say anything. We sit there for a while, then Millie speaks again:

"I mean, I did not just have sex with my 18 year old step-son, right?"

She turns to look at me.