My boyfriend is constantly cursing at me

This has been happening alot including tonight, my bf of 3years has been yelling at me and cursing at me because I want to stay up and talk to him. We don’t get a lot of time together because I’m very busy and I find that I have a few hours to talk and catch up with him during the night but he does not like this and has yelled and cursed me out multiple times. Yet, when I don’t bother him or call him I will see that he stays up maybe until 3 am. There has been times where he blames me for his messed up sleeping schedule but it is not my fault he does not go to sleep early. He apologizes and says he loves me but yet he continues to yell and disrespect me. I feel bad because we’ve been together for so long and this is not how I expected things to be. There is also a constant fight that we have about money, he thinks that we should always do 50/50 when paying for food and going out but I feel like I’ve paid for so many dates and it is true that there is times where he has paid but I don’t like that he think that it should always be 50/50 and he tries to act like it’s not a big deal.