Not trying to be snobby but

My bf of 3 years works and lives at home. I am in college full time and my parents help with expenses. My bf has minimal expenses and saves a lot of money but does treat himself to stuff car parts, clothes etc. here's my deal everytime I suggest something to do that is a little more expensive (concert, weekend getaway) he's so against it. I don't need him to buy me stuff but at the same time I feel like he thinks I'm not worth his money (like instead of taking me somewhere or something small like buying me coffee (I will always pay for him cause it's $2 yet he never does for me) he rather do something else or use his money for just him. I'm not trying to sound like he needs to spend money either even if it was planning something to do with me I would be happy. It's just over the span of our relationship I'm the one to pay for the concert, buy him something just cause when I don't work and he always has. Like I said it's not as much the money part but that's the big red flag to me. Another example is once when I needed gas and didn't have enough on my debit card I asked him for $5... he didn't immediately offer to help me when he knew I couldn't make it home! I just don't know how I feel about how he acts with money. It's just I have this whole idea that when I graduate and work to take him on vacationsm, and I feel like he would never even want to try to do the same for me