I can’t orgasm with my boyfriend no matter how hard he tries…

I’m 21, he’s 22. I’ve been with my boyfriend for 5 months now, we’re both very comfortable with each other and share everything. It was his first time with me, I had a few partners before.

He’s really enthusiastic about going down on me and using his hands too… And he has gotten better since the start of the relationship.

But still every time he does it, I’m close to orgasming, am open about how he should do it and how I like it, but it just never happens.. On my own I never have any issues and orgasm easily every time.

I always guide him, tell him how I like it better, so I’m not sure what the issue is. He has started saying that I contribute to it because I’m not comfortable with him or don’t find him attractive.. None of this is obviously true, but I do think that there’s some kind of wall in my mind.

What do I do?❤️