"The Vow" - what if it happened to you?

Just finished watching "The Vow" on one of our Encore movie channels, despite the fact that I do not like Channing Tatum as an actor (he's pretty decent in this movie, though). And it made me wonder, what if that happened to me? God forbid that it does, but what if I lose my memory and forget how I feel about my husband, or if it happens to him and he forgets his feelings for me. What would you do? Would you wait around forever, without having the guarantee that they would remember or ever feel the same way they did before the accident? Or would you just bail. It's such a hard situation.