There was a poster recently who I think has deleted their post… they didn’t get a fair viewing I don’t think and I can’t imagine the situation is easy. She had recently met someone who was expecting a baby with their ex.
I am currently in this situation, however I am the pregnant ‘ex’. I’d be happy to speak to OP and discuss things from the point of view of the other party.
Life is not simple nor is this type of situation!