Hi, tutifruiti and welcome to Psych Central! What a shock to a marriage! I'm so sorry this happened to you. But at least your husband is finally being honest with you about who he is. I assume he's going to explore the homosexual side of his sexuality. Please know that what he's saying does not take away from what he felt for you, as his hetereo love.
Divorce seems for the best, under the circumstances, unless you are willing to be there while he experiments with his bisexuality.
We are here for you.