Thanks for your question. As you say, there's no reason why contact arrangements should be terminated. His ex is not acting in the best interests of their son, who is presumably missing his dad. Your partner needs to see a solicitor now and get a letter out to her insisting that contact is reinstated. If she refuses he has to get the solicitor to raise proceedings in court for a contact order. A letter from the doctor would be helpful, but it is very very unlikely that the court will tolerate her behaviour and unfounded allegations. Get an appointment with a family law solicitor immediately. If I can answer answer any specific points in the meantime, please let me know. I hope that helps. Please leave a positive rating so that I am credited for my time.