Ukomba said:
Peter Parker, Mary Jane, One More Day
That is all.
For those who don't know, Comics don't like to marry people anymore. It closes off certain avenues of stories that other creators might want to tell and while stupid, is probably the main reason DC said no. I seriously doubt it really had anything to do with them being lesbians, (even though that is controversial) They didn't allow it to happen because they didn't want a One More Day happening down the road, or having to retcon her marriage in some stupid way. It's stupid, and it is the reason we don't have Peter Parker married to Mary Jane, but it is the way things are.