Bachelorette party

So my baby cousin is getting married next year and I am her maid of honor. I just told my boyfriend about it and he said oh yay that's where our money is going. Then I said I would save up I literally have over a year to save for it he said ya it doesn't matter then I told him how her fiance recommended they have both parties combined like we were planning on doing. And he said oh yay and I said what is your problem he then proceeded to tell me that that's what he wants to think about me getting drunk around all of this dude's groomsman..... I don't get drunk I have a few drinks and that's all I don't like how I feel when I get drunk I don't like not remembering what happened. And he would literally be at the party to it wouldn't just be me

Am I in the wrong for being upset he got mad and went in to the room and hasn't came back out.