Husband doesn’t want sex

I am so frustrated guys! I haven’t had sex in 2 going on 3 months. I talk to my husband (of 4 years) what’s going on. He basically balanced it on me and how I do t want to be woken up by him to have sex. The reason being that he is such a selfish partner and never ever does what I want him to do and I definitely won’t get anything good if I’m sleeping. I’m so frustrated with him that I see why people might step out on their marriage. I tried having a serious conversation with him about it all again last night and then he slept on the couch. Wtf! I need help from my fellow married people. I don’t know what to do.