The pair was caught sharing a cuddle and a kiss, reported Ok! magazine.
According to the reports, Styles, 21, had been partying with a group of friends but seemed very friendly with Samaio.
The duo appeared to share a great chemistry as they hugged and kissed each other when she left.
Samaio, 23, is said to be friends with Styles' ex, Taylor Swift and another Victoria's Secret model, Nadine Leopold, who has also been romantically linked to the musician.