My current project is an apocalyptic piece that mainly deals with a man's struggle against himself. He has lived a life of blind faith that parrots everything the world has told him, but in the circumstances of the apocalypse, he is brought to a position of having his own faith based on experience. Of course, when I speak of "faith", I don't necessarily mean a religious faith (though that is a part of it). I've got a fairly decent sequence of events to move the story along, but where I'm struggling is in the main character's love interest. He rescues her from a group of attackers approximately two weeks after he has fallen into the pits of despair and begun to question everything in his life. What I can't figure out is why she would choose to love him, outside of the fact that he saved her. That seems like a weak reason for her to fall into a lasting romantic love built off of more than emotion. Sure, she would be grateful, and she might have a crush on him if she thinks he's attractive, but how do I develop a lasting love between a man who has--in all ways--hit rock bottom and a woman who has no other reason to love him other than pity for him? A feminine insight would be especially helpful, since I am somewhat dense when it comes to relationships. I know enough that I do not want this relationship I'm writing to be an "Edward and Bella" romance, based off of "puppy love". It needs to struggle and it should struggle, but how do I start from their position and make the love struggle and still come to life?