Boyfriend CAN'T COME from Sex

So, my recent bf last too long in bed and hasn't be able to come during sex. I talked to him if he has a condition we can both work on and look for medical help, but he says his problem is that before he had just hookups and he always had sex while drunk, and that way he would come. That's why it's hard for him to cum with me bc he's not drunk and he doesn't want to be drunk while he's with me. He says he just have to get used to the feeling of coming without being drunk. He always make sure I come, but I wanna give back too. He says it's ok that he doesn't have to come all the time, but I would really feel good seeing him cum. I tried different positions and even blowjobs but he can't even cum with that. I wonder if any of you is passing or has passed through a similar situation. Thanks!