I really do appreciate the feedback on this, both the positive and the ones that seem to be really against me and my actions. To update; I've come clean to both guys about the type of relationship I'm in. The guy I had sex with and I are in agreement that what we did was a one time thing and wasn't the best idea. We are going to remain friends, but what he decides to tell his partner is his business. The other guy that I have just been sexting with seems to be fine with my relationship, but has some serious hypocritical tendencies and I am cutting off that type of communication with him, though I don't know what that will do to any friendship we had.
Many of you pointed out that even my questioning was admitting to myself that what I was doing was wrong, and I agree with you. I think this was just one of those things where I felt I needed someone else to tell me what I already knew.
Thanks again and cheers to being on the up and up!