Please help me, my boyfriend is confusing me.opinions are needed!!?

My boyfriend is graduating high school in a couple weeks and his cl decided to have a little gathering of seniors.. he went there and he was drinking and smoking and he was drunk texting me the whole time and then he said no girls were gunna be there, and so with that thought i thought it was okay for him to dirnk just with the bois you know? but then he texted me while i was sleeeping at 2:14 in the morning and was like "3random bitches came..they got nothing on you" and i just got enraged. i know he'd never do anything..but something about me is totally pissed off and mad about this situation. he knew that i was depressed or mad about it or whatever. but he kept reuring me he'd never do anything like that to me and he wanted to text me the whole time and he's coming to get me this morning. he said he wouldn't be home any later then 10:30. i told him to come early so he said he willl and its 9:56 right now.. i texted him at like 7:50 to tell him my rents were gone (im faking sick) and i still haven't gotten an answer. UGH. why am i pissed? am i completly over reacting or what? give opinions pleaseee and how do i make myself feel better in the mean time? what can i say to him when he gets here??