The 27-year-old "Where Have You Been" hitmaker and Scott, 23, spent time together at Henry's, a venue in Hollywood, reported Aceshowbiz.
Rihanna opted to wear an oversized hoodie and Puma slippers, whereas the "Dance on the Moon" hitmaker wore ripped dark jeans and a plaid shirt.
The outing marked the fourth time in recent weeks that Rihanna and Scott have been spotted together.
The duo ignited dating rumours after they were seen getting cozy at New York Fashion Week after-party and at a nightclub in the West Village neighbourhood of New York City.