my boyfriend is cheap as hell 🙄

so from the very beginning of our relationship i always insisted i'd pay for myself and he always insisted he got it, as time went on i became comfortable letting him pay for stuff and he became comfortable letting me pay for stuff and there was a fair balance, we'd often take turns. but we've been together for almost two years now and i feel like the balance is way off. i buy him lunch and bring it to him at work every friday, im always picking stuff up for him, if im at the store and see a shirt i think he'll like or his favorite candy if it's not that much i'll grab it for him, i always run out to get medicine if he feels sick, the brakes in his car aren't great so almost every time we go somewhere together i drive so i'm spending money on gas, the only thing he contributes to is groceries. i know a lot of those things i don't HAVE to do no ones making me, he doesn't OWE me anything in return but we've been together for a while and ive just always done things if i knew it would make his day better or easier. we rarely go out to do anything be it to the movies or to get something to eat he asks "do you need me to get you too?" and kinda just gives me this look that's like "please say you'll pay for yourself" so i always say no it's fine i'll get it because even though i'm not uncomfortable letting him, i've always felt uncomfortable asking people for anything no matter who they were, which is why i know he asks instead of just doing it because he knows i'll say no. so this weekend we went to the movies and before the movies he asked me if i could get us food so in my mind i kinda figured "ok i got the food he's gonna get the tickets" and then when we get to the movie he does what he always does and goes "do you need me to get you too?" and for the first time ever i was like "yea can you get my ticket" (which his dumbass wanted to see it in imax so the tickets were more expensive, they were like $15 each so yea $30 is kind of a lot but i have spend at least $100 on him in the past two months and he hasn't spent a damn nickel on me) and he just like groaned and gave me this weird look and just reacted like he was annoyed and turned back to the little touch screen to order tickets and kind of like side eyed me as he turned towards it so i was like "ok never mind i'll get it myself" and i was so irritated because i was like damn you don't have a problem letting me feed you every week and buying you food before the movie, but if you wanna moan and groan about getting my ticket i'll do it. and the thing is HE has a job, im living off my refund check from school and left over babysitting money until i can find a part time job that fits my schedule (which my mom doesn't want me to work at all because i have to keep my GPA up to keep my scholarship so she wants me to only focus on school) and he's always complaining about money, i never make a big deal about it because he has bills to pay like his phone bill and car insurance and my family said while im in school they'll take care of all that stuff, so every time i start thinking he's cheap i'm like "well he has bills to pay and i don't" i still have to put gas in my car and feed myself, i need to save my money too, no matter how big or small it is he still has an income and i don't, once my money's gone it's gone until i get christmas or birthday money. and i don't know how to bring this up without sounding bratty, it's not a "you don't spend enough money on me, you never buy me presents or pay for me to do anything" its more like "im spending all my money on you but i don't even want to ask you to do anything for me because you make me feel like it's an inconvenience" and i still feel the same way as i did in the beginning of our relationship, i don't mind paying for myself, i don't feel like he should go broke trying to take care of me just because he's the guy in the relationship, i just feel like there's no balance anymore