problems with friends, .. Options

[xxbebot]

okay so my friends and someone i thought was my friend. lets say the girl is lisa and the two guys are john and nathan.

okay so lisa goes to a different school and she was on a website and found my friends aa. she added john. after awhile, she told john she liked him. then john started liking her. then she met nathan. she said he was hott and that was her reason of liking him. she told him she liked him after two days. two days. so then john found out and started being so depressed. so i try to help him. he start telling me how he just wont be hopeful anymore... and how hes mad at nathan. and him and nathan are like really good friends. and like whats pissing me off is that lisa keeps on acting all close with my friends. she never even met them. and shes making them visit her. john, nathan and their other friends. but john and nathan dont wanna go and they tell her. then she gets mad and now their going. but like once she sees nathan shes gonna be all over him and might ruin his friendship with john. i know i sound jealous. but i just dont want john too get hurt.. and its pissing me off how she acts all close w/ my firends..