What's the Name of That Book??? discussion

This book has:
Two best friends
A new boy in town
Main characters bestfriend likes boy, but they only really date after main character turns him down
Main characters bestfriend is upset by this
There’s a dangerous bridge other character like to party at
Best friend of main character is upset by boy not really liking her and goes to party at bridge and dies (not sure if she intentionally commits suicide or not)
The main character avoids her school locker
I’m pretty sure she avoids the locker because the last time she opened it was when she was told that someone important in her life died and it was traumatic for her (possibly her mom)
When best friend of main character dies she opens her (mc) locker to find notes left from her friend when she was alive, even notes she wrote from when she was upset about the boy
Boy and main character both attend funeral at the end
There was a poem in the book too about love im pretty sure saying something about his (new boys) eyes

I read this book somewhere from 2010 and 2015, but it was pretty old even in that time. Book was probably older than that anywhere from 1995 and forward??? anything helps, single book, i think the cover was pink.

The Alison Rules by Catherine Clark?

Yes that’s it! Thank you!!!