Never reaching orgasm with my current fwb

I (F48) can’t cum with my current fwb (M39)
Once married, two children, divorced and several partners. Every partner including my husband had a different way of making me climax… But with current fwb of one year, I have never had a proper orgasm. I like him, I feel aroused and get wet, he asks what I like and always tries to stimulate me, but, whatever we try, there is always a moment when I feel really high and suddenly stop feeling anything and never reach climax. Maybe is sth that he does or doesn’t do that stops my arousal, or a matter of size, maybe his penis size or style of moving isn’t enough for my stimulation, or maybe a really small climax has just happened and then I feel relaxed? I have tried with him whatever (except oral) my previous partners did to make me cum, but no results. I like sex with him, it’s fun and hot and beautiful feelings and cuddling afterwards, but I wouldn’t say no to the whole package. It’s been a year, is it possible that I will never reach climax with him, even though with former partners I had multiple orgasms?