Sept. 25 (UPI) -- New couple Scott Disick and Sofia Richie were spotted kissing at a celebratory dinner over the weekend.
The 34-year-old reality star and 19-year-old model shared a smooch before enjoying a dessert reading "Congratulations Scott and Sophia" at a restaurant Saturday in Miami, to TMZ reported. Richie's name was misspelled on the plate.
The outing appeared to be a pre-planned celebration, although sources said Disick and Richie are not engaged. Us Weekly reported Richie later shared a photo on Instagram Stories of "Congratulations Scott and Sophia" crossed out.
Disick and Richie made their relationship Instagram official earlier in the day during an outing on a boat. The reality star posted a picture of himself nuzzling Richie's neck, while Richie shared a snapshot of herself and Disick walking on the beach.
Disick and Richie's PDA-filled weekend comes on the heels of dating rumors. Sources told People last week the pair are "inseparable" after they were spotted shopping together in Beverly Hills, Calif.
"Since returning to L.A., Scott and Sofia are inseparable," an insider told the magazine. "They are spending every day together. Sofia seems smitten."
"It's obvious [Sofia] looks up to Scott. She constantly giggles around him," the source added. "They are very flirty. Scott takes care of her, opens the car door and pays for everything."
Disick shares three children with ex-partner Kourtney Kardashian, from whom he split in 2015 after nine years of dating. Richie is the daughter of singer Lionel Richie, and the sister of television personality Nicole Richie.