Oh HELLLLL no! Were Jordyn Woods and Tristan Thompson really hooking up for MORE THAN A MONTH before this revelation broke just days ago?!

At first we thought it was a single hookup this past weekend at a party Tristan hosted at his house ... now a new report says they'd been seeing each other for more than four weeks! What the hell?!

Hollywood Unlocked, the web site that broke the cheating story, is now reporting new details which make this whole thing just THAT MUCH WORSE.

Apparently sources close to Khloe tell the site Jordyn contacted her the morning the initial story broke and told Khlo she stayed over at Tristan's house to make sure he didn't cheat. When Khloe realized it was Jordyn who was the b*tch in her man's bed, she confronted Kylie's BFF and all hell broke loose.

Kylie kicked Jordyn out of her house; Tristan has now deleted his comment "Fake News," which he'd posted on a report of the original cheating story, and Jordyn was spotted in an LA-area restaurant crying over the whole ordeal (which she caused).

Meanwhile Khloe's posting her usual quote memes on her Instagram story ...



And the social media backlash for the dirty couple is that Kim has unfollowed both Jordyn and Tristan while Kylie and Khloe are still following both.

But it gets dirtier still ... another new report claims Tristan would stay at his OTHER baby mama Jordan Craig's house whenever Khloe would kick him out -- which was a frequent occurrence. Us Weekly reports the baller would go over to Craig's house when he and Khloe were fighting and they also report he's a very involved dad to the former couple's son Prince ... well no wonder! He's always sleeping over with his ex!