"Hey bro, I know you're dating A-------, so I thought you'd want to hear that I saw some other guy touching and making moves on her last night, and she was letting him. I don't know anything else or who the guy was, but if I were you I'd want to talk to her about it."
ftfy
Get in the van
I dont know if its just a stupid joke or your plain handicapped
it starts with "t" and ends with "rolling"
If the genders were reversed I'd say tellBut there's nothing wrong with a girl trying to manipulate boys. She probably is exploiting their feelings for free stuff and attention; you have no right to interfere with her hard work