How should I have reacted to this? ?

First of all, I don't see where this has to do with weddings, second...he most definitely deserved the kick. If he thinks so little of the female that he thinks it's o.k. to grab at them, then the girls have every right to defend their position. You can feel sorry for any pain that he was in, better that than a suspension from school for ual harrment, although that may be coming too if the girl reported him!