Romance book where the book ends with it being a massive email to her “ex” asking to reconnect

[Angelica]

I read this book back in 2017 and I can’t remember the author or the title of the book. I remember the cover being either a smoky pink or purple. It’s about a girl basically retelling their relationship and I’m the end it turn out to be a long email asking him to meet her so they can reconnect. Thank you for whatever comes to mind!