Romantic love, I think, requires a degree of physical attraction, but devotion is needed to maintain it as an actual relationship. Physical attraction is a feeling you don't really have control over, but devotion is something that has to be chosen. So, ideally... I suppose it's passion combined with the commitment to value someone else completely above oneself.
Angela N. Blount, Once Upon a Road Trip
commitment, defining-love, devotion, love, romance, what-is-love