Sexless Marriage - Is my husband gay or just not that into me?

I need a man's perspective... I have been married to my husband for about 3 years. We are both in our late 20's. My husband and I have sex about once a month. My husband is not very affectionate to begin with and in order for him to have sex with me or show any interest in having sex with me he tells me i need to drink several alcoholic beverages, which is fine either I drink them all or I say I can not he finds some reason to not have sex with me. He always blames me for us not having sex. I try very hard to get him back in the mood and he either throws a temper tantrum and ignores me or he just says hes not interested and goes to sleep. What does this sound like to you? I don't know if my husband just isn't attracted to me or doesnt like sex with me or if hes gay. I am seriously considering the possibility of him being gay. My husband NEVER touches me intimately, when we do have sex its always anal and it literally feels like hes taking a s**t on me. There is no affection, no passion, no intimacy...It feels like I am just there for the ride. Please help me! My husband is my EVERYTHING, but I am so tired of feeling worthless, ugly and unloved.

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