Ok this is going to sound harsh but I really don't mean for it to be....
You either go along with the JW mindset and continue to be sad
OR
You make up your mind to be happy (only contact baby daddy about child) and move on with your life.
You and only you are in control of your happiness. Your thoughts/actions/reactions are what either make you happy or sad. No one else has control of those.
Best of luck!!!!