ABANDONED. YA book boyfriend cheats with best friend; She starts taking yoga with new male best friend, male friend sets her up with a guy considered a "jock"

[Mary]

I don't remember the small details of this book but I am looking for a young adult/teen book that i read somewhere in the early 2000s, maybe 2003-2007. A high school girl finds out her boyfriend is cheating on her with her best friend. I think she may find out on her birthday. She becomes somewhat depressed. She becomes friends with a boy who goes to a different school. She starts taking yoga with new male best friend, male friend sets her up with a guy considered a "jock". There is a school dance that combines the two schools and the novel ends at a music festival with the girl and the jock uniting. I also think the girl and the jock call each other different nicknames relating to being prickly or ice.

[Lobstergirl, au gratin]

Mary, are you still looking for this or did you find it?

[Lobstergirl, au gratin]

Lobstergirl wrote: "Mary, are you still looking for this or did you find it?"

No response in 2 years. Moving to Abandoned.