Can't tell my husband

The night my husband confessed his feelings for me we were at a party. we both got drunk he fell asleep in one room and I passed out in the living room. One of his friends who also stayed behind after the party. his friend covered my mouth and raped me. I haven't told him about it because he's made me the happiest woman ever but getting intimate with my husband sometimes I still think about that night and I get scared of him. I can't believe I get scared of the man I love so deeply