Father in the Middle of Divorce Proceedings

B. is in the middle of divorce proceedings. His wife expressed a sudden wish to separate. Now she has decided that she no longer wants him to see their child, which for B. is incomprehensible. He has found a possible solution to his problem. B's. child doesn't look like him and maybe it is not really his child. The time has come for B to get confirmation. He doesn't want to be taken for an idiot who has no legal right but has to pay until the child is an adult. It would be a lot of money. He decides to discuss a paternity test with his wife, even at the risk of aggravating an already bad situation.