KNOW HOW TO LET GO IF THEY HAVE FALLEN OUT OF LOVE

This is a part where you have to look out for in a relationship. sometimes is not all about throwing all your resources to keep a situation going, at some point you have to respect yourself and take a break no matter how much you love your opponent and see if he or she is giving back the same energy to keep the relationship going.
So if your opponent have fallen out of love letting go is the best decision to take, yes it will hurt but make the move.