Telling My Husband I’m Bi

So I’ve known I’m bisexual for almost a year now, and looking back, it’s clear I always have been. My husband is very much against homosexuality (he has gay friends and he treats them well, just doesn’t believe he or I should be gay at all). I keep wanting to tell him about my sexuality and have even hinted at a threesome, but he always shuts me down. I love him but I also want to be honest with him and I’m so scared that he will reject me.

I need help please! How do I do this?