Disposable?

I cling on to people who would rather have nothing to do with me.
I give my all yet receive so little.
I seek them out, wanting to take refuge in their warmth but all I got was a cold shoulder.
I give them chances to prove me wrong. To erase my doubts but all I got was silence for affirmation.
What do you do when people replace you? When they're your constants while you're disposable?