Why can’t he make me finish

My boyfriend and I have not had sex with eachother yet as we are fairly new together. However, we have done other stuff. I give him blowjobs quite frequently and I have no issues making him finish. He hasn’t ate me out yet but even when he fingers me I can’t finish? I never have an issue on my own. I think he’s so hot and the things he does to me is so hot too. i have no problem being turned on, i just can’t seem to finish. i think it makes him feel bad because I always get him to cum. Any tips or tricks that we could try or I could ask him to do? aside from the obvious of using his mouth