My friend is going wild. PLEASE HELP. I DON"T KNOW WHAT TO DO.?

Explain to her that as her friend you love her, and want to best for her. Then explain that the choices that she is making right now could leader into having an unwanted child or AIDS or another STD. Talk to her about the way she lost her virginity and question if she wouldn't of liked to have losted it to someone she cared about, or someone who cared about her