Need some advice

Life has been crazy. Im not sure what to do with my relationship. I love him n i know he loves me but at the same time. He doesnt seem to emotionally have my back. I start getting sad or something or just want to talk. He backs away n usually just ends up going to bed n i deal with it on my own. I dont exect him to try to fix my problems at all but a little support would be nice since i been supporting him n his friends. Its jyst coming to the point i feel used. He doesnt have much of a sex drive and only really has sex with me because he knows i want sex which makes me feel like a horrible person for wanting it but also makes me feel like he doesnt even want me. He does other things though like fixes things around the house and my car and such but honestly just feeling used or im doing something wrong. I try and talk but i get shut down by him cuz he doesnt want too