Khloe Kardashian and Tristan Thompson Not Back Together, Despite Halloween Hangout

Khloe Kardashian and Tristan Thompson certainly raised a lot of eyebrows this weekend with many wondering if the former couple had rekindled things yet again ... but we're told it simply isn't happening.

Kim Kardashian held a massive Halloween bash at her Hidden Hills estate for all of the youngins in the Kardashian/Jenner family. However, a video recap North posted from the party had everyone talking because you see Tristan front and center.