Stingy partner?

Is anyone else’s partner stingy with money? Mine always wants to buy the cheapest of everything. It’s a complete turn off. :( I understand we both grew up having very little, but he never treats himself even if he really needs something. I always try to surprise him with things he needs or just pamper him however I can when I can. This might seem selfish, I get it, but he never does the same for me. Ever. I’ve addressed this to him many times, but there’s been no change. I told him, “I am not asking for anything fancy, but it would be nice if at least once you’d surprise me with a chocolate bar or anything”. One time we went to Target and he told me to pick out some undies and he’d pay for them. I was so happy and excited, but when we got to the cashier he didn’t make any movement to take out his wallet, so I just paid. We live together and I pay half of everything even though I make LESS than half of what he earns. Paying half had never bothered me before until recently because I realized I do so much more for him. I also pay for random things we might need (for example, we needed a new drying dish rack and I had been telling him for a while. I finally just bought one myself). I’ve also told him numerous times that we should open a joint bank account and he said okay, but this guy procrastinates so much that I’d have to drag him there myself. I’m not sure if I’m being selfish for expecting more or if he’s being selfish for being so tight with money.