I go to school in a van, some other guys/girls also are there so today while coming, there were me, guy A, guy B, Girl C, since I don't know them I don't talk and just look outside through the window, not minding what they talk, joke and do but today what happened was that The three of them were being loud(comparatively a bit more than usual) the guy B was telling the guy A to stop, the girl C was calling him a pervert(all were said in my regional language)but again they were laughing also, when I looked at them I saw the girl C keeping her bag in her lap and the guy B was standing on his knees in the seat looking at her
After that the guy A left, so I feel like the Guy A was trying to touch girl C's breast but I am not sure but seeing at real time what happened I felt like that's what happened but again I am not sure cause the three of them are friends and jokes a lot
Now am somewhat feeling guilty that I didn't do anything even tho I didn't see what happened and even after that the three of them were kinda laughing, and also after the guy A left, girl C and Guy B were talking
(I don't know what should I do, I also don't know if I should post this in this sub or with this flair)