Answer by  
                                                                                          ApprenticeJenn (959)
                                                            
                          
                          
                                                          The signs will be the same as if he were unattached, but more 'under cover. '  He may be sneaky in showing his interest and say things like "don't tell her I said that. "  Keep in mind that if he steps out on others, he will do the same to you.