And the truth is finally REVEALED!!!
[Image via Kylie Jenner/Instagram.]
Ch-ch-check out the video (above) to hear the RAUNCHY relationship tip Gwyn gave one of Chelsea Handler's friends at a party!
We're guessing the Iron Man 3 star is going to win back some fans after they hear this NSFW tip!
Well, if it works anyway! Let us know! LOLz!