Khloe Kardashian was horribly conflicted on what last name to give her baby girl in the wake of Tristan Thompson's cheating scandal ... before finally deciding to go with Thompson.
Our Kardashians sources tell us ... Khloe chose the name True about a month ago, and up until the cheating scandal broke -- it was a lock that True's last name would be her father's.
We're told that quickly faded after video from October surfaced -- days before Khloe went into labor -- of Tristan cheating on her .