It's been 10 months since my ex-wife told me she didn't love me. Two weeks later she was seeing someone else and they are still together. I know their connection started long before that. Well our child's bday is coming up and she invited me to a dinner with her friends and family. Her boyfriend will also be there. I politely declined and told her I am not ready for family functions with the boyfriend there. My son will be 15. I will be taking him hunting the following weekend and will spend the weekend with him.

Am I wrong for declining?