There is nothing wrong with chatting with other girls online. I have a few girl friends I talk to quite often who I've either never met, only met a couple times, or just hardly see, but we chat online all the time. Granted, I'm also not engaged or married.
It sounds like you are just assuming that he is cheating on you. You have no proof (at least right now). is he still that awesome guy that you have known and loved?
Unless you feel your needs aren't being met or he is going to the computer for fulfillment instead of you, I wouldn't really worry about it.



