Can’t come with my boyfriend???

Hi y’all! Title pretty much says it all :)

I’ve been dating this awesome guy for about 6 months, and we started as FWB so we’ve been sexual from the get go. He’s the person I lost my virginity to, and that was about three months ago.

Like I said, we’ve been intimate for our whole relationship and he has never once pressured me into doing a single thing. Every time we explore new territory (such as undressing each other for the first time) he always asks if it’s okay. To make things better, after every time we mess around we ask each other what worked and what didn’t about that time. All this positive communication got me to feel suuuuper comfortable with him.

Here’s the thing: he’s not doing anything wrong (I don’t think???), everything he does to me feels really good, I’ve told him specific things to do and he does them, and I know I get close when we hang out together, but I just can’t come with him. It’s not only during sex either, it’s also fingering/oral. He has before, no problem, but I don’t know why it’s so much of a hassle for me! I don’t masturbate like 24/7 either and I can definitely get off without porn, so I just can’t trace this issue. If y’all could offer some tips or advice that would be super nice! Thank you!!!