Need help right away?

Basically 3weeks ago on friday my friend found out that the guy she'd been flirting and planning to do stuff with she has a boyfriend felt bad (seens this wasn't the first time)about what she was planning on doing. So told the boy she wouldnt do that cuz she really likes her bf n he goes he wuld tell him.next thing she goes n tells only me cause im the only one who knows about this and then she was about to burst into tears so i took her bathroom we quickly talked about as we had to get to our next class.once we get there everyone line up for new seating plan and then my friend burst into tears again so i asked sir if we culd go out for sec to calm her down sir only let me and her go but or oher to friends came anyway and later went back as sir was calling them me friend the one crying said to tell sir she not coming back to class (the boy blackmailing her in our class)my friend the one she told later comes back tell us that this boy kickin her n everyone swear n that sir told me to come bk just as she said this my other friend burst through the door crying saying that everyone was swearing calling her slut and asking if we thought we were special that we get to do this all the time.we went and told another teacher as the teacher in our class weren't doing anything . Now lately me n my friend girl crying haven't been talking as her bf nearly found out the truth twice once because of me .we sge eachother mornings and after school but dont really talk i found out she been bitching about including my other friend who i have told everthing too and my friend who i hang around with ignores me when she around