My friend has boy trouble what do I do?

Ok to start of no offense to all those kids in english kids but the 6th grade english kids at my school are real big retards. There always complaining that there single but at recess they play like there gay. But there's this one guy who keeps asking my friend like today they asked her out 6 times and asked her why she wouldn't go out with him and this other time the guy fell and asked her to help him up but she didn't so he got all pissed at her, plus they stalk her. What do I do? I mean I want to help her.