Nadia is the daughter of rapper Gerardo Mejia, and she won Miss California in 2016. That same year she competed the Miss USA pageant and made it to the top five, but was most remembered for struggling to answer a question about the economy.
Luke and his ex-girlfriend Arzaylea had a very messy split back in April, after she allegedly cheated on him with rapper Blackbear (who is now dating Bella Thorne).
The 5SOS boys are about to kick off a tour across the world, so who knows if this is a ~lasting~ relationship, or just a fling for Luke. Regardless, we're happy to see him happy!