5 Years.. Never orgasmed

I've been with my SO for 5 years and we have sex regularly 2-3 times a week. We try different positions, and even get kinky with sex toys, lube, and furry handcuffs. The sex feels good, but I never have been able to orgasm. What the hell?! Any advice? #sexuallyfrustrated

P.s. When I'm solo I have no problem reaching an orgasm.