Not all the routes are messed up, just Leo and Flynn, the others are tolerable (in the sense that they won't hurt as much)
Kinda disagree with that, then again the first route I did is TJ's and that one is already heartbreaking enough, I don't know how messed up the other endings are, but I found myself only attached to TJ and this left me shocked & "devastated" for a few hours before going to sleep. I probably should have listened to the warning of the game instead of playing it.