Khloe Kardashian Knew Tristan Thompson Hooked Up with Lamar Odom's Ex

Khloe Kardashian isn't shocked Lamar Odom's ex-fiancée is on Tristan Thompson's hook up list ... she knew already, and Tristan's tryst with Sabrina Parr happened way before they even met. Lamar spilled the beans on Tristan's hook up with Sabrina…