Time to move on or keep trying

Im in love with this guy, we have been off and on for about two years now. WHen we have sex he gets off super quick and doesnt give two shits if i climax or not, i try everything lingerie, i ask to give him head all the time ( he never wants it). I dont get it i feel like he is either sleeping with other people or maybe he just doesnt get into sex like every other male on the planet...what do y'll think??