I went out with a boy from school for a few week.but I haven't been seeing him revently because I have realised that he isn't a very nice person and he is become really jealous. In the last few days he is been sending me really nasty text messages and emails-sometimes he send me twenty or thirty a day. I feel upset and nervous every time I get a text or email. I can't tell my parent because I'm frihtened they well stop me going on the computer and I am embarrassed about the things that he is been writing in the emails. I don't know what to do