Predator of Love

This story is about being unnoticed, unwanted or even being undesirable until the unnoticed, unwanted or the undesirable have been matched with the one person that makes their life a living paradise. Then when the unnoticed, unwanted or the undesirable becomes noticed, the one person who came into their life to love them truly becomes a distant memory or even an enemy. Was this person who was unnoticed planned to use that one person for their own selfish desires?