I have asked him on several occasions if he is seeing someone else, hes says not....but like I have said before who can be 100% sure. Having said that he has no reason to stay with me, we are not married and the children are not his. The doctors, I am not sure what hes told 4 of them but on one of the occasions I went with him and told him myself, the doctor gave him a clear bill of health, hes had all the bloods you can think of done. that doctor just said it would happen when it happens