swallowing SUCKS

I have a slight problem..

I've recently come out as bisexual and I definitely identify as that, but I usually tend to like girls more than guys. my problem, however, is that when I do get with guys the only thing I really enjoy sexually is when they do things to me (fingering, oral, foreplay type things) but I don't usually feel comfortable doing those things to them. like my last boyfriend would ask me if I wanted to give him a bj when we were together and I always wanted to because I wanted to please him and he seemed to really like it and I would try but I just could not bring myself to enjoy any part of it whatsoever.(especially when he would ask me to swallow 😷) I guess I'm just wondering if other g irls or maybe even just straight girls have a similar problem or if there's anyways we can fix it and make that sort of thing more fun for me ??