I dont know what to do.?

My boyfriend and I have been together for 3 and a half years and we have lived with each other this entire time 2+ yrs at my parents house and almost a yr in our apartment I love him wo much he's my best friend and I can hr myself with him but he's angry all the time and blows up over little things and he is condescending words me and takes me for granted and as a result I have begun to emotionally guard myself with him and Im wanting to tell him I want to take a break and that I'm tired with how yes treating me and I'm hoping it will give.him the kick in the butt to change his behavior but I'm so scared the opposite will happen and we will end up breaking up cotton good.