Straight or Not?

hello Dr Bill, 

I have been dating my bf for almost two years. Our relationship is PERFECT and we love each other very much. he's 31 and I'm 25. My only problem is that i have concerns that he might be gay.. or curious! 2 years ago, before we dated he told me that "no straight man can ever say he has never been attracted to a gay before, even just once".. since then i have always been very careful to see any other gay signs, which has been throughout our whole relationship. Last night we were watching a TV show and a clear gay scene popped up, a straight guy was flirting with a gay guy, and during that scene, I saw him quickly rub his dick in a very fast motion for about 5 seconds and then let go of it. what does this mean? Was he turned on by the scene? Is he gay? the last time i told him he's gay, he got very angry and broke up with me for a few hours. PLEASE HELP ME OUT!! I don't want to waste my time with him if he is a closet gay: we already have plans of getting married after i get my degree. He is a Tall Masculine man, which might be one of the reasons why he wouldn't want to "come out"! 

Well, there are still a great many men who are conflicted about their sexuality, and embarrassed by their sexual and romantic feelings for other men, but I can't say positively one way or the other about this fellow. Some men who are attracted to men will do or say absolutely anything to convince themselves that they're, deep down, heterosexual, including saying that "no straight men can say he was never attracted to a [gay] man," which sounds like he's justifying or trying to explain his feelings for men. He could be repressed as well as closeted. If you discuss it with him never simply tell him he's gay, or accuse him of it in a judgmental manner. Be sympathetic. If he's gay you both need to know so you can each move on into new relationships. You can start the discussion by, say, talking about the gay marriage debate, or saying you have a friend whose boyfriend might be gay. And see what happens.