I'm kind of with Refiner-my gut said why on earth would you let him have a sip of wine?! (Given the family history and all) I'm not turning this on you-just asking the logical question. For your ex, he will not be responsible with alcohol and seeing as he thinks nothjng is wrong with him, it's not surprising he pushes alcohol to his son. My exs parents and family is the same way. It's not right!!!!