You already know all You need to know
You felt this was too much intimacy when You didn't know the "details"
You're already gone - just stay gone.
Yes. Should you not find out one fact more----------- you have all the info you need. Two things you can do. First, break up with your partner. He is a lyer and a cheat and you can no longer trust him. You aren't married, so this is a no brainer to me. Find someone that tells you the truth. He's allowed another woman to perform sexual acts (of any sort) on him and therefore, is a cheat. Get rid of him.
second, look for receits to the places he went to and call the authorities. Shut them down pronto. That is prostitution and illegal most places.
What a coinidink we've had this post after others we've had this week . . . I'm just saying . . .
You will probably never find out the truth. If you have already left him, just let it that way and move on. Find someone that will treat you the way you deserve to be treated. :-)
Hitman's spot on, you know the important part. He cheated on you and did something (things!) he knew would upset you - what's to be gained by knowing the gory details?
You need to stop torturing yourself with the sordid details of exactly what he did, and work out what you're going to do.
Best of luck.
What is there to find out. You know the truth.