Is it reasonable to be mad about this?!

Is it reasonable to be mad about this?

This guy and I used to like each other (well I still like him sort of) but a couple days after he liked me, he got a girlfriend. When I was passing them in the hallway, he pretended like he didn't even see me. Was he supressing his feelings? He usually always says hi, smiles, and hugs me when SHE'S not there. He's trying to comment me on myspace... but I'm not sure if I should ignore him. What should I do? Is this reasonable..

When you say that you two 'used to like eachother', did you mean boyfriend/girlfriend? If so, how do you know if he liked you that way, did he say? Does he pretend not to see you ONLY when she's not around? Just asking, your sentences are kinda vague..
Anyway, he may be ignoring you while his girlfriend is around because maybe she is the jealous type that doesn't want her man talking to other girls. If he was your friend, then he should tell her that he can still talk his friends regardless of his relationship. BUT, if he has a girlfriend, AND is flirting with you, leave him alone, that just means he is just playing around, and your going to end up getting hurt.
I don't care what guys say about girls, their actions are way more confusing than ours.
The best thing to do is to be upfront with him and just ask him what the deal is. That is better than being behind the bush about things. Just ask him why he ignores you, if he doesn't want to give you a straight answer, then forget about him, and move on, his loss, not yours.