A head exploding tag on tumblr is "queer baiting." It's used a mind numbing amount in the Community fandom, usually with the trobed tag. Queer baiting is when a show implies two characters of the same sex are romantically attracted, but then gives them heteronormative romances and storylines. I've seen shippers say that if Troy and Abed don't hook up then the show is erasing queer identities. I want to ask them how they even begin to reach this conclusion.
It's pretty much shipping goggles with a bit of annoyance at the lack of well-written gay couples on television. Hopefully, we'll finally see one sooner or later on the S.H.I.E.L.D. TV show, since seemingly the only person who knew how to make good gay couples on American TV was Joss Whedon.
Actually, Stargate Universe did a good job. In fact, the show almost had the message that where straight people are sex maniacs who can't keep it in their pants, gays never sleep around. Given that the straight characters had a sizable amount of relationship drama, while the one gay couple was steadfast.
Incidentally, the actress who played one of the gay characters on Stargate Universe, Ming-Na, is one of the regulars for Agents of SHIELD.