What should i do?

So every time i go to my boyfriends house we have sex and i don’t mind but i just don’t want it to be every single time we hang out which that’s how it is most of the time unless he comes over because we don’t do it at my house. I have talked to him about how much we do it and that i don’t want to do it all the time and i need to give myself a break and time for me to want it instead of just doing it because he’s horny and wants, and he’s said okay and that he understands but nothing has changed and any times i’ve told him no or that i don’t know he proceeds to kiss me and try to turn me on so i can change my mind and then we end up doing it and sometimes before i go over i tell myself no and to say no because we just had it last time i was there and he can wait but it just ends up happening and i’m there like 3/4 days out of the week so it’s not like i don’t give it to him at all. He’s also moving to college in a couple weeks so we’re going to be doing lost distance so that may be it but i feel like he doesn’t listen and i’m tired of saying stuff because it doesn’t get anywhere and i’ve talked to his brother and told me to talk to him and i have but it didn’t do anything and i feel like he just thinks i just get too emotional about it but i’m not and it bothers me.