Young adult romance novel: boy and girl meet and spend an entire night together and fall in love, but end up having to part at the end (but they don’t end their new romance.)

[Madisen]

I believe I remember a scene with them on the beach, and also eating pie or something like that.

And potential titles would be helpful!!

[Stephanie]

This sounds like the flashback chapters in Sarah Dessen's Once and for All.

[Kris]

Madisen, around what year did you read this book? A range of years is fine.

[Daisy]

Nick & Norah's Infinite Playlist?