It could well be a double meaning, that we can take either way. For now, based on what we know, she means her husband (because in her timeline, to her Doctor, they are married, I'm guessing)
However, based on what everyone seems to be speculating, it's probably one of those lines that we'll look back on and marvel at the clever writing and double meaning behind it. Just a shame so many of us on here are already one step ahead of the game.