Trouble orgasming

I am only able orgasm through masturbation. I can't cum through oral, penetration, or fingering. I tried rubbing my clit dying sex, but my boyfriend got offended. I've never had an orgasm with him. When I told him that, he freaked out so I've lied ever since then. I've even tried teaching him and he doesn't seem to understand. HELP. 😭😭