The truth is, we need to understand self worth and when to walk away.
There is a different betweeen when something is truly yours, and you worth it, and it worth you, and when something is truly yours but doesn't worth you.
Instead of using human being, which is easy, I will use my friend job, after working her ass out on the job, she was worth a promotion and that promotion was going to give her the worth she deserves, that's why I said she should go for it, but if its a promotion that doesn't change anything in her life or improve what she had before, then she's worthy but the promotion is not worth it.
Jus like human, you are in love with a person and you know you are worthy of the person because you have loved and do what's right and a lady or man is trying to take them away from you, the person might not see the attempt of the other people trying to steal him or her, ( we can be dumb as human sometimes) so the lady or the guy is meant to fight for ther love and let the third party know they have no place, but if the person they are fighting for is not even trying to be with them and is just doing things that will hurt the person fighting, then the person need to know their worth, if the person decide to live, they should, they shouldn't even wait for the person to come back. If they are waiting, then thats dumb, they should go for something better or someone who would treat them well instead of waiting and saying "If he or she comes back, then they are mine"