The two partied on the SS Groot together in Miami.
Kourtney Kardashian's ex was pictured passionately kissing his new girlfriend while they enjoyed an afternoon boat ride in Miami Beach on Sept. 23, 2017.
The pair held hands in Miami as they continued their vacation together.
Following the family style dinner at Seaspice, in which they ordered meli melo, truffle pizza, king crab Legs, and octopus, the couple were surprised with a congratulatory cake with the inscription "Congratulations Scott & Sophia."
A source tells E! News that while out to dinner at Seaspice in Miami, they ordered champagne and Barceló rum cocktails for the table and that Scott "held and kissed his new love through out the evening."
Sofia posted this pic from Miami with her legs draped over Scott's.
The two showed they world they were a couple when Scott shared this PDA-filled social media post.
Sparking rumors, Scott and Sofia were spotted on Sept. 15, 2017 in Los Angeles.