SOLVED. Boy finds girl version of himself - YA? [s]

[Maggie]

a boy meets a girl and they are the same person. there are parts of their lives that are weirdly paralleled (they have the same ding in the floor from when they each separately dropped a pair of scissors, etc). for her, her parents are still together. for him, his parents are separated. and then at the end of the book they sort of switch places somehow? and i believe there was a sequel. that's all I can remember

[Sue]

This sounds like 'The Aldous Lexicon' trilogy by Michael Lawrence.
"LOOK BELOW THE SURFACE. REALITY IS DIFFERENT THERE.

Naia Underwood has a double in another reality - a male double called Alaric. For almost seventeen years their lives have been identical but for one thing: Alaric's mother died following a train derailment two years ago - the same derailment that Naia's mother (the same woman) survived. Now, Naia and Alaric are about to meet for the first time - with disastrous consequences for one of them and far-reaching changes for millions.

This is a single-volume ebook edition of the acclaimed alternative lives trilogy formerly published in the US by Greenwillow and HarperTeen as The Withern Rise Trilogy. The trilogy is also available as separate-volume ebooks for those who prefer shorter reads. The three volumes are 'A Crack in the Line', 'Small Eternities' and 'The Underwood See'."

[Kris]

The Withern Rise / The Aldous Lexicon series by Michael Lawrence - suggested by Sue - https://www.goodreads.com/series/6160...

[Maggie]

thank you! That's the book!