I do not know the answer to your question, all I can say is this is very common for men on their own out here.  It's a two way thing as they are both getting something from the situation.  My suggestion is if you still love him and can forgive him, come here and be with him, if not take him for every penny through the british courts. I am sorry if I am being blunt, but if he thinks that little of you to be unfaithful he will do it again, I know I was in your situation.  Best of luck and I hope you find the right answer for you.