You are not a boomerang and should not be bouncing back to someone taking your love for granted. This should be the feeling and understanding people have so that they are not continuously taken advantage of and basically taken for granted. When a person is put aside or rejected by another they should and must put that relationship to rest and behind them and move forward. It may take some time but there will be someone else coming in the future and that someone is going to be the one that truly cares and wants to make one's life one that will be filled with love and great joy. Everyone deserves to be treated with care and respect and if that is not happening in a relationship between two people supposedly in love with each other it might be time to re-examine things and move on.
The fact of the matter is that every individual is truly special and anyone who cannot see that and understand it is probably not the type of person another will want to be around for long. Life is a special gift and sharing it with someone that can be loved and appreciated is truly a blessing and never anything to be taken for granted. Everyone deserves the right to be totally happy and to feel special.