Oh gosh, this gave me chills! I love how every page plays a little bit with the format, sometimes playing it straight with a page of prose and a choice, but sometimes giving a false choice or revealing things at a deliberate pace.
The way the characters were developed did a great job of making everyone feel real, even if they were just briefly mentioned, and the main characters sympathetic, even if neither one is perfect (except in the other's eyes, maybe).
Played through a few times trying to see the results of other choices.