Heartless

People has been asking me lately if I have a significant other. And all I say is that I "hate" dealing with drama. And that is true. I don't think I'm alone with this but for me I just feel so heartless. I feel like my heart died. I have given and even offered love but never received anything love in return. Sometimes I feel like I have just wasted that love where it should have been given to someone who deserves it. I am aware that there are few guys that had shown interest in me but I have been so numb to even give them something in return. I feel so totally heartless. I feel like my heart has been rebelling from all of the hurt and betrayal even from just friends. Now I feel like I don't even care about anything and anyone. That truly worries me. Should I be worried?