Not enough sex

I’m 19 and I have been seeing an older guy. It has only been a couple of weeks. He seems to be happy with once a night sex if that.

He has said I’m the best he’s had sex wise and I’m not silly I’m sure he’s saying that just so I feel good. But I don’t think me not turning him on is the problem.

I don’t know if I’m the one with the problem wanting more sex or if I’m just horny.

Is it normal for him to be happy to just get it done with. He just says he’s tired and can’t do anymore.