Sara Leal is the girl that the Ashton/Demi cheating & divorce controversy is centered around.  She's done an interview with the Sun where she went into detail about the night she spent with him.

Get ready Ashton, your world is about to crumble!  From the Sun:

Sara said: “We had sex twice. Everything felt natural. We were having a good time. One thing led to another. He was good but it wasn’t weird or perverted or creepy. I was attracted to him and he was attracted to me.
“He had great endurance. We were up for a while. It was about two hours.”
Sara told how they fell asleep after their romp. Then Ashton congratulated himself on his conquest before she left at around 9am on Saturday, September 24 — his wedding anniversary.
Sara said: “The last thing I remember him saying was he did a good job. We woke up and I was wearing a robe. He opened it up and I was like, ‘What are you doing?’ He was like, ‘Just checking. OK, I did good! You’re really pretty.’

Wowza thank God I never had a one night stand that ended like that!  That's not exactly something you say to someone after you sleep with them, especially if you cheat on your wife with them!  "Ok I did good?"  Yup you sure did Asthon!  You did a good job of wrecking your marriage!  I'm not gonna feel sorry for Ashton, nor am I going to feel sorry for Demi either.  Ashton, you married a woman that is way to old for you and on a different level, it was a disaster from the beginning!  Demi, what the hell were you thinking I thought you were smarter then that!  EPIC FAIL on both parts!