How do I tell him I know hes cheating

[brokenangel]

I recently discovered that my boyfriend is sending and recieveing naked pictures online. Talking with multiple girls about sex, doing shows over webcam.
I confronted him once before and he swore he wasnt doing anything wrong. Now i dont know how to tell him i know hes lieing seeing that i found out by going through message archives in his messenger.
I feel bad for breaking his trust.

[fawkse]

it's horrible when we come accross a secret much like the one you recently discovered. you feel cheated, and now you are insecure about what pleasure (and more) you bring too him.
i've been in your shoes, and it's one of the worst pains to feel.
honest and open communication from both of you will help heal, but the way you approach him will effect how he acts.
liking porn, whether it's live web cam or recorded vidoe to erotic stories is very healthy for both females and males. one that is comfortable in their sex life, will have a better outlook on other areas in their lives.
have you ever read or watched some porn without him knowing? good question huh!
would he consider that cheating?
porn isn't cheating. if he is actually communicating and having emotional ties to these women, then you can call it cheating.
sit him down and tell him that you snooped, and you found these things. tell him you are concerned that this may be actually happening in real life. show him that you care about his needs and you need to understand what is going on. be pateint and caring when you talk with him. let him know you love him, and that you are hurt becuase you lack the truth of what is going on.
i hope it's just a case of his sexual fantasy. if however, he is really meeting up with some of these girls you need to tell him that you can not tolerate that. you may end up breaking up. that would be the worst of it.
most importantly, you need to communicate with him. if he can't be truthful, don't allow yourself to remain the victim here. move on and find yourself happiness.
good luck
~fawkse~