Should I say it officially?

I Often Give Opinions In Girls To My Bf. He Knows I Like Porn And Often Pay Attention To The Females. I Tell Him All The Time How I Have The Biggest Crush On Kim Kardashian And Megan Fox. I Even Told Him I Wanted A 3Sum And What I Would Do To This Particular Girl. He Has Even Said I Act "Gay". I Have Never Came Out Official And Said Im Bi. Do You Think He Knows.? Do I Hafta Say It Officially.? Could He Possibly Think Im Joking.?