very simple - if you love the good woman, she will love you back. despite of you being this, that and the other. women don't care about this shit. they care about being loved - than they feel it's safe to love back.
it doesn't work the other way round - men don't respond like that. however, it would be nice if they'll know - the only way to make sure that she'll love you, is to love her first.
what a beatiful scene it was, one of the most beautiful on the show