The 'Umbrella' singer was partying in the Hamptons - an exclusive New York seaside resort - with friends last weekend when she spotted the handsome stranger working as a doorman at the AXE Lounge.
When Rihanna left the club, she was seen laughing and joking with the mystery hunk before asking for his phone number.
E! online reports: "By the end of the evening Rihanna was smitten with the doorman. But he wasn't just any doorman. The dude is also a model. He is really hot.
Rihanna asked for his number on the way out." Although the Barbados-born beauty has been flirting with other men, it is believed she has rekindled her romance with ex-boyfriend Chris Brown.
Rihanna, who split from Chris after he attacked her in February, has reportedly upset her mother Monica Fenty by admitting she is still in love with the 'Run It' star.
Monica is quoted by Britain's Star magazine as saying: "I'm devastated, but what can I do? We love her but can't stand to see her play Russian roulette with her life. "Chris has a bizarre power over her. She still loves him and he knows it. In her eyes he is a god. Even after this time, and even after what he did, it's not diminished. "It looks like he still can - and is - calling the shots. Chris can charm the birds out of the trees." Rihanna, 21, reportedly told Monica that Chris is "ingrained in my heart and in my mind".
Last month, it was claimed Rihanna and Chris - who is banned from coming within 50 yards of the singer after pleading guilty to assault - had been staying at the same New York hotel. Meanwhile, 20-year-old Chris is reportedly set to appear on US TV talk show 'Larry King Live' later this week to discuss the attack.