Inexperienced bottom partner.

I'm str8ish. I started fucking this guy off grindr. I'm the top. He was my first guy. Turned into fwb sort of thing. He is so pretty and a really passionate kisser. I love spending time with him. But his head game and hand game is really weak. Even worse than the most chicks I've slept with. I tried to guide him couple of times but no luck. I wanna tell him to do better but don't wanna come across as an asshole. Any tips?