make me bitter
Examples
Watching you walk out of my life does not make me bitter or cynical about love. But rather makes me realize that if I wanted so much to be with the wrong person, how beautiful it will be when the right person comes along.
I refuse to let what happened to me make me bitter.
I'm a person that carries everything that happened to me in my past, with me into the future. I refuse to let it make me bitter. I still completely believe in love and I remain open to anything that will happen to me.