seriously need advice?

Boyfriend and I just got into a fight because we come to Austin for a concert and we're in the elevator with food, we'll some girl comes up to him and is being really flirty saying "she wants his food and how much for it this and that like up in his face" and I said "uhm no thank you" and she says "okay be stuck up" I say "okay just cause we don't want to give you our food?" And she calls me a whore and walks out and i say "you don't need anymore damn food anyways" the broad was munching on some damn Doritos while talking to us and my boyfriend did nothing the whole entire time! He stayed quiet I would have wanted him to atleast stick up for me but nope not a damn word and he says I'm the immature one cause I didn't ignore it but yet she was the one in his face! Annoying as hell don't even want to be here with him anymore at all.