Per pictures from the party, which you can see here, the pair look very into each other. While it doesn't look like Centineo bothered to dress up, Karanikolaou was part of Kylie Jenner's matching costume crew. She's in the pink, surrounded by Jenner and their friends Sofia Villarroel, Yris Palmer, Carter Gregory and Victoria Villarroel.
The pair apparently left the party together at around 2 am. Notably, this is absolutely a bash that would have violated California's state guidelines, which currently says a maximum of three households should be in attendance at any gatherings. COVID-19 cases are steadily on the rise in the U.S. and we're pretty disappointed in the reckless and selfish behaviour.
The pair also attended another party, where Karanikolaou dressed as a female version of Chucky from the Child's Play franchise. Centineo gave exactly one (1) ounce of effort and wore a ripped and bloodied t-shirt.
In summary about this intriguing couple? They're not married, but they're definitely a thing. We'll be intrigued to see if Centineo starts becoming good friends with the rest of the Jenner-adjacent crew.