Please help!

I know how あなた feel =/ this guy that I used to like flirted with loads of girls even after he 発言しました 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 あなた feel guilty with yourself for feeling this way but also あなた feel that あなた can't tell anyone because they will think badly of あなた :S but hang in there :)
Eventually あなた will forget about him, and someone will come along who is perfect for you! So there is no need to be upset :D also あなた 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 あなた want to do, you'll be much happier.
So, my アドバイス to あなた would be to 移動する on, start up some new hobbies, meet new people and, should あなた find someone else that あなた like...tell them! Because we only get one life and its a fucking short one, so あなた may aswell give everything you've got to make it a good one!
I wish あなた luck :)