Am I doing it wrong?

I don’t know what to do... I have been on and off with my partner for about 3 years now but this time is different. We have sex (not a lot) but we do have sex

Every time we have sex or get ‘in the mood’ he never cums... I don’t know if it’s normal but all my friends talk about their relationships and how their boyfriends do. When I’m sucking my boyfriend off he doesn’t cum. Maybe he doesn’t like it? (He says he does though?)

I have slept with a guy who is now a friend (it’s very awkward now between us) but we had sex and were sexual and he came every time. I don’t know? Am I not good enough for my boyfriend or? He always talks about getting the feeling before he cums but he never actually gets it.

Please leave me tips. Thankyou..