I feel like he doesn’t want me

I love my boyfriend and I know he loves me... but tonight I started kissing him and ya know normally that gets us going and what not... this dude didn’t even get hard and then stood up to move something by the tv! Sometimes I sit feel like he doesn’t want me. I’m probably just over exaggerating and we should probably talk about it but I just wanted to get this off my chest. I’m just so sad right now Idek...