Please help!

I know how u feel =/ this guy that I used to like flirted with loads of girls even after he zei he loved me, and it made me so jealous that i scared myself!I started to hate the girls he flirted with...but I should have hated him. I also found out that he had a gf, and that he was just stringing me along....he still tries talking to me but i refuse to socialise with a bastard like him.
Jealousy can be one of the most unpleasant feelings ever,not only do u feel guilty with yourself for feeling this way but also u feel that u can't tell anyone because they will think badly of u :S but hang in there :)
Eventually u will forget about him, and someone will come along who is perfect for you! So there is no need to be upset :D also u shouldn't worry about being popular! I used to worry about it all the time (back when i was in school :L )but honestly, just forget about it and do what u want to do, you'll be much happier.
So, my advice to u would be to verplaats on, start up some new hobbies, meet new people and, should u find someone else that u like...tell them! Because we only get one life and its a fucking short one, so u may aswell give everything you've got to make it a good one!
I wish u luck :)