Dear Maggie,

My sister and I had a falling out fifteen years ago, when she had an affair with my fiancé. Her husband forgave her and took her back, and they’ve lived happily ever since. I dumped them both, haven’t spoken to either of them since, and have no desire to change that. I hate them and will until I die. And I’ve stayed single by choice. I learned my lesson the first time, thanks. I want no more to do with men.

But as a result of not speaking to my sister, I’ve missed out on the lives of her kids, my niece and nephew. Now my nephew is about to graduate high school, and to my surprise, I recceived an invitation to the party. I don’t know if my sister sent it, or if my nephew sent it without telling her. I don’t know what to do. I want to begin rebuilding my relationship with the kids, but I’m not ready to forgive my sister. Help!

Signed,