Dont talk to his friends, doesnt look good on you and him. You can only tell him that youbare not going to tolerate this any more and whats your next consequences? No one can decide for you. If its for me.. I personally will tell him off, and tell him if he does it so often I'll rather parent the children myself. But before saying such statement, i also have to justify giving him his own space. Maybe you can schedule a agreement that he can only go out twice a month with his friends likebwise for you, give yourself time off and he take cares of the kids, another one date just for you n him per month without kids. I think its healthier space is given, and he learns to control n be responsible too :)