Thank you for all the responses, ladies....here's an update:
I confronted him, and honestly, I was amazed at how calm I was through the whole thing. I told him I knew about the texts and said verbatim what the text messages were, and also told him the naked ***** in his phone was NOT me. The texts were quite sexual in nature, and also consisted of him asking one woman when they were going to see each other(Whore #1 is apparently a married schoolteacher), and the other asking him if he's going to come over (Whore #2 is apparently an old co-worker with an abusive on-again, off-again boyfriend). He apologized over and over for the text messages, but vehemently denied cheating.
He went on and on about how I'm the only woman for him, and how he wants to start a family with me, and be able to provide for his son and blah blah blah...he said at the time, he didn't think he was doing anything wrong with the texting because it was just "bullsh!t talk" and he never planned on meeting up with any another woman. He continued to say how sorry he was, and how he doesn't want me to The only point I will give him is that he's around me 95% of the time...BUT there is ample opportunity for him to cheat if we are on different schedules(i work during the day, sometimes he has a night shift) or if I end up taking a long nap or whatever.
Here are the kickers: Whore #2 knows about me. She knows we were together, she's got a man of her own, yet BOTH them think it's appropriate to send flirty and sexual messages to each other, even as a joke. WHAT???? I have male friends, but we don't talk to each other like that. And the broad who sent the buck naked picture; he apparently told our roommate about it(him and roommate are really good friends from way back), and apparently said how "he's not going to let these females ruin what he has."
Anyhoo, he's been apologizing all night. He's stressed out and mad at himself, and admitted he was stupid and wrong, but said he never cheated. He's been crying and throwing up all night. I guess he's remorseful, but I don't have anything to say to him right now. All I said was, 'hey if that's the life you want, go ahead. Commitment ain't for everybody."