Boyfriend trouble, help...

My boyfriend and I have been together for 2 years now. I live with him (on breaks) due to family issues. However I’m in college and stay there 99% of the time. More recently it seems like he doesn’t want anything to do with me. We have promise rings and he gets mad when I don’t wear mine but he has worn his maybe twice he whole time. The sex has stopped, the cute things have been forever gone, he doesn’t want to do anything anymore what do I do..? I mean I buy him whatever he wants drive him where he wants and he never does anything.