I think you did good BestP4P bro. I mean,you had to show your dad that you are mellower (after getting head!) and I guess you showed hiom that. Also,if the girl was not asking for help,you shouldn't get involved. Great patience man,don't let i get under your skin,just dust it off and maybe make a mental note of the guy so if you ever see him again and no-one is around,whoop his ass.