How To Deal With A Disgruntled Baby Mother?? [The Scenario]

I received a letter from one of my listeners that read;

Dear Supreme,

I am at a loss, my boyfriend's baby mother is driving me crazy and it's driving a wedge between him and I. She is scorned and still upset that he doesn't want to be with her. She tries to use their child to get her way with him. Sometimes I want to leave and be done with all the drama but I love him. Please help me.