In fact, we don't even know if Raven and Erik are lovers. It's hinted at, but then, so is Erik/Charles.

Mostly I've seen this on tumblr and ONTD. An article came out saying that most of the deleted scenes on the DVD would be about Moira and instead of going "oh, good, an underused female character is getting fleshed out," everyone's whining that there isn't more Erik/Charles, even though that's the entire movie already.