So did he sleep with her or not?!

If you believe him when he said that he barely touched her then no.

That is what is driving me nuts. The cat at the end of the story verifies that they definitely hung out---but it doesn't prove whether when they hung out they did anything sexual or not or took it that far. That is annoying. Not sure why they made that ambiguous. He was either lying to Junior so Junior would keep lowering his guard and feel bad for him---or he lied to Mike to piss off Mike cause he really thought he was going to die in that moment so he wanted to piss him off really bad before he died, and hopefully die really fast cause he thought maybe this will make him so mad he will just shoot me. NO idea.

I think they did. I mean, think about it, he's gorgeous, she's gorgeous, she has a horrible husband. Why wouldn't they?

I think considering all the bad things he talked about that he did prior to the kidnapping and all and thinking he needed to change his life I'd bet on him having slept with her. He slept with a married woman and that is a no no people. As for this movie being good it was average at best and nothing special.