Jealous of my friends perfect, new life!?

ok so my friend moved to her dads so i only get to see her on the holidays. i saw her a few days ago and i'm really jealous and i feel guilty about being so jealous! she left a shy girl, who never had a bf, not much friends and was going to a all girl school (i had lots of friends, had my fair share of bfs in the past, i was outgoing and was happy going to an all girl school) and she came back full of confidants, has lots of friends, a really good looking bf and is having the time of her life because she loves a mixed school so she is with her bf in school. my life fell apart when she left, i have lost all my confidants due to comments made by my now ex friends, lost my bf and no boy will go near me, only have two friends and hate going to an all girl school! i feel terrible and i am seeing her again soon, i'm afraid i'll get snappy at her because i got so sick of hearing about how well she is doing and she didn't call last night because she was going on a date!