5 yeee...you have to find out abt his intentions, casually or on purpose, for it might happen so that he is looking for just having good time with you and that's all. And besides, if he has child you should think twice before endanger his family stability. And else, try to know something about his relations with his wife, probably he is with you in revenge to his wife.
10 points 
1 Does he want to date with you? That is the question.