Is it normal to get pissed off at a sushi restaurant because you're poor

my rich friend asked if my boyfriend and i wanted to go get sushi with her and her boyfriend. at first i was like "nahh...we can't afford such food". then i started thinking about it and it sounded really really good and i was hungry so i decided to go and it seemed like the best idea ever until i looked at the menu and i couldn't decide what to get because everything sounded so good but it was so expensive. My friend was looking at me weird because she spends money like this all the time, it's no big deal. but it's a big deal to me, the last time i went out for sushi it was my birthday. my boyfriend kept telling me he's buy me anything i wanted but that made me feel worse because i feel uncomfortable ordering expensive food. So i ended up not getting anything and then told my boyfriend that his spicy tuna roll looked nasty and i refused to try it.