Romance literature and LGBT literature are similiar. So similiar in fact, that I dislike them equally.
Romance just isn't enough of a plot. Person P meets Person V. They fall in love. Something stupid and completely avoidable happens. They break up. But no! They find each other because true love prevails. Ah, so happy. So satisfying. So... so nauseating.
Coming out isn't a plot either. Maybe it was but not anymore. Yeah, yeah, yeah, acceptance, blah, blah, everyone has the same insides, whatever, I don't care, Care Bear Stare!
I don't care what your plot is. Write a western. Write about werewolves on Jupiter. Write an alternate history mystery where Benjamin Franklin travels back to the days of Egypt and Rome to save Cleopatra, only to find her dead from a laser blast to the heart.
If there's romance, it takes a backseat to the plot. Coming out? BACKSEAT. Or better yet, if your story takes place 20 minutes in the future, maybe homosexuality isn't such a big deal at all. Instead of a LGBT character, have a character who just happens to be LGBT. Those werewolves from Jupiter. They're lesbians. Does that make them more awesome? Yes. Should their hot and hairy she wolf-on-she wolf scissoring be part of the plot? No. Maybe. Well, not unless you're writing erotic fiction.