In the photo, 19 year old Sofia is walking bare-foot on the beach alongside Kourtney Kardashian's ex boyfriend and father of her three children.
The two had a "Congratulations Scott and Sofia" cake in front of them, but why?
The outing appeared to be a pre-planned celebration, although sources said Disick and Richie are not engaged.
Richie posted a similar photo on her Instagram story with the couple posing with their arms around each other.
One of their friends shared a video of the moment on Instagram, capturing Disick and Richie kissing each other on the lips. Richie's name was misspelled on the plate.
Disick and Richie's PDA-filled weekend comes on the heels of dating rumors.
However, it looks like the pair have both confirmed the relationship on Instagram, with both 19-year-old Sofia and 34-year-old Scott posting cute snaps of one another on their Instagram stories yesterday (24 September).
Scott has previously referred to Kourtney, the eldest Kardashian sister, as "the love of his life" even when they weren't together, and had remained close with the family regardless of whether or not he remained with Kourtney.
A source revealed Kourt was less than pleased with how her former flame was behaving, and as a result has cut all ties from him completely.