The pair's PDA during a Friday night outing at The Nice Guy in West Hollywood, California, was well documented in a series of Snapchats from Jenner.
The steamy videos captured the pair up close and very personal – including, in one video, a lip-locked session on the club floor and, in a second video, some kissing with Tyga's hands firmly pretty ... far down Jenner's back.
In a third video, taken outside the club, Jenner, 18, walks up to Tyga, 26, adding the caption, "Baby daddy."
Later, Tyga was seen leaving the club with a group of male friends, one of whom appeared to be holding a gun. Jenner was not with the group as they left, but they stopped to take photos with fans. (Reps for Jenner and Tyga did not respond to requests for comment.)
Though their relationship has been up and down since it was confirmed last year, a few months before Jenner turned 18, she and Tyga have been spending more time together lately.
They initially split in November, but soon reconciled, and in recent months have been seen out at dinner, partying, and hanging at the Kocktails with Khloé studio.