Hiii. I (20f) have been with my bf (20m) for almost a Year and a half. In this time, I've literally made him finish from head ONE TIME. He's more experienced than I am, and he is the first person I've ever done this with. My gag reflex is something I'm slowly overcoming, but I don't get to practice often since he says he prefers just having sex.
Last night I tried giving him head for about 15 minutes and he was just blank. He then told me with a very unimpressed manner that everything I was doing was wrong and that he wasn't getting anything from it. He told me how to do it better (Which I've been begging him to do ever since I started giving him head a year ago!!!) but then said his dick hurt so I didn't even try it. He then told me head never works from me because it doesn't seem like I really like it, and I put too much pressure on myself.
I think this was true in the first place, but I have kinda started to like it because with time I feel I've gotten better and actually get positive reactions from him sometimes. So this really hurt and made it feel like he is just closed off to the idea of me specifically giving him head. Anyways, he said he doesn't care that this specific doesn't work with me because everything else we do is great, but I'm not satisfied with that. I want to do to him what he does to me when he gives me head SO BAD (edit: I mean that he gives really good head and go crazy)
Also, this has never been a problem with other girls, just me. I wish I didn't know that, but I unfortunately do.