I don't think so. They just met in the first twenty minutes (I think). Barely any chance of them being related. But if they are because the people that makes the movies creates a plot twist, remember that is always give to flip a table. 😸
Spoiler, they're the romantic-interest. There is light flirting between them, the only specific example I can remember is when they are fixing the Falcon Fin asks Rey "do you have a boyfriend, a cute boyfriend at home."