Can’t orgasm with partner?

I have no problem orgasming when I masturbate. There’s a very clear work up to it and feeling it about to happen and then I reach the peak and cum.

But when I’m having sex with my partner I can’t seem to reach orgasm in the same way. When he is rubbing my clit or going down on me, and even when I’m running my clit I can’t seem to get there. I kind of get up really high and feel super stimulated and good but there is never that feeling of it’s about to happen or reaching that peak. I’m not sure why? It feels good but not like orgasms I’ve had when I masturbate... I’m not sure why this is? Or how I can fix it?

And note: I’m NOT talking about not being able to orgasm from penetration alone. I can’t orgasm from that, but I’m referring to how I can’t orgasm from any form of clit stimulation when I’m having sex with my partner.