Hi All, hope someone can give me advice. My ex and I separated nearly 2 yrs ago and we have a 10 yr old son. My ex has him 3 nights a week. He (ex) is a compulsive liar (he's told people he had cancer & stroke on different occasions of which he has not. Another lie has come to light in the last 24hrs where he has told people that I have run up a debt of £8000 on a credit card belonging to him. This is not the case. Can I stop my son from going to his fathers on the grounds that he is a compulsive liar?