Okay, I am sixteen, i have DD cup breasts, a nice figure, and a decent ass. I am pretty, and nothing is physically wrong with me. (I've asked plenty of people) I am engaged to someone who I thought was the love of my life, but I don't think he wants to be with me anymore, and i think he might be gay.
When we first got together, the sex was awesome. We did every position out of the book. I sucked his cock all the time, he ate my pussy a lot too.
About six months later, the sex came to a screeching halt, and now we have sex MAYBE once a month. I tried bondage, lingerie, morning blow jobs, ... I tried everything. I even offered a threesome, and he rejects every idea I try. He JUST really doesn't wanna have sex with me. And I know he isn't cheating, because he spends just about every waking moment with me.
He doesn't check out other girls with me like he used to, and he doesn't ever look at me. I wanna go have fun and get fucked, but he just wants to sit around and play xbox. I currently haven't had sex in four months. He is slightly abusing and clingy.

Is he gay?? Should i leave him??