Coming out to your husband

I have recently discovered I'm bisexual.

I have always thought women were sexy and such, but I just recently discovered I'm attracted to them as well.. I'm married to a wonderful man, but I want to tell him how I feel. I feel he has a right to know and honestly I don't wanna hide it. So, what do I do?

A 3some is something I'd want to do if he was down. (Another reason I want to tell him)