Gay in denial people don't admit to being gay because they don't want to be gay - for whatever reason. They could have every person in their life be supportive (which usually isn't the case) and still not want to admit it because they view gay people as X, and they're not X, so they can't be gay. Maybe they think that gay men are seen as feminine, and they would never want to be viewed that way, so they can't say they're gay. Their reasons don't really have to make sense to anyone (maybe they don't even make sense even to them). We have no idea if maybe someone overheard their parents talking when they were three about how gay people are weak, or gross, or sinners. And they forevermore see themselves as not ever wanting to be sick, because they themselves would consider themselves gross or disgusting. We.just.don't.know. Only they (if anyone) know.
I agree with Still Wondering - it's not really about the label. It's about him soliciting sex on the internet. It doesn't matter that you're not having sex with him or not if he's breaking his vows to you by soliciting from others - be they man or woman. He's being dishonest with you, and he's lying about it. It's not about whether you need sex from him to be happy. Do you need honesty from him to be happy? Do you need faithfulness? What do you need? Are you getting it?
Kel