<human>: Can you give me a shortened version of the text?

I'm in a very happy relationship with my (I believe) sexually satisfied boyfriend of 2+ years.

I made the terrible error of finding my BF's reddit username.  I looked through some of his comments and found some "PM" comments on NSFW forums, for people offering casual sex, pictures, etc.  So I don't know what sort of information has been exchanged, just that it has been.

Do many men pm girls to get off even if they're in a relationship?  Is chatting generally as far as these things go?  I imagine the "super hot horny blondes" aren't really going to meet up with my BF.  If it's more likely that he's just doing a little internet dirty talk I don't really have a problem with it.  However, if it's common that these things escalate, I think it's a discussion I need to have.

Do other people consider this kind of interaction to be in the same general idea as pornography?  Or does the existence of another person make it more troubling?  I'm a little upset, but don't want to overreact if this is something common.
<bot>: BF is apparently pm-ing girls on reddit NSFW forums, including posts offering to meet up for sex.  Don't know the content, don't know if it is something to be worried about.