Emo Scene Community

Okay, so...there's this guy, who is my neighbor and a friend, that I like. At first, I never thought I'd be falling to him but it just suddenly did. We got closer to each other using fb and texting and when my birthday came, I invited him, same thing when he celebrated his birthday, I got invited too. We became friends but still, he's a little bit shy to talk to me. Last saturday, when we were texting, he mentioned that he already have a girlfriend but he's not sure about it. He said that he courted this girl for less than a week and then, she's his girlfriend now. And he's got another problem, he's crushing on another girl who is obviously not his current girlfriend. I gave him some advice and he thanked me for those. But then, later that same night, he confessed that I'm that other girl he has a crush on and I was shocked. I wanted to play fair so I told him that I have a crush on him for a long time now. Then, he said that he's regretting that he just realized that he love me more than he love his current girlfriend when its already too late and was regretting that he courted somebody else. Before all those thing happened, he invited me to their HighSchool dance and wanted me to join him. I said I'll go but now he has a girlfriend, I don't think it's best to go with him. I mean, it will be weird since we'll arrive there together and what if his girlfriend sees us? And his attention will be divided since, of course, everybody on his school knows that he's with this girl but then, deep inside of him, he knows that I am the one he really likes. So guys, my question is, do I still have to join him in that hs dance or not? Because for my opinion, I don't want to go with him in that even anymore because it will be really really awkward since we have this mutual understanding but we're not together. Help guys? And if I won't join him in that event, how can I say it to him when we can't talk personally 'cause it really is awkward for both of us? :|