Into BDSM but boyfriend is super vanilla

So for awhile I've been super into BDSM/bondage type fantasies and all I want is for my boyfriend to want to try it too. I've experimented by myself with self-bondage and gags and vibrators and such and love it, but idk how to bring it up with him. 😔 We tried using handcuffs ONCE and he didn't seem into it AT ALL. So since then I've never tried bringing up anything related to BDSM/bondage-esque topics. Any advice on what to do? I want the submissiveness, gags, blindfolds, whips, being tied up, rough sex, all of it.