21 y/o man with no sex drive

Hannah💕 • 20 y/o. From texasss
Is it normal for a 21 year old man to have absolutely no want to have sex? When we first started dating (it was long distance) wed do stuff at any chance we could get. And once we moved in together, it just disappeared. Now we do stuff MAYBE once every two months. Im getting better at dealing with him turning me down every time i try to turn him on. But i also loved knowing that he wanted me. Now i feel like he doesnt. I dont know what to do.