Rihanna and Drake stepped out for another dinner date at Nobu restaurant on Sunday evening, March 9, in London, England. The 26-year-old singer has been touring around Europe with Drake, 27. Drake is currently on his "Would You Live a Tour?" concert tour. They have already been spotted together several times in Europe's hottest cities.

Dinners and appearances together are further fueling the romance rumors. After celebrating her birthday last week in Aspen, Rihanna flew to Paris. Before Rihanna's appearance at Drake's concert, they were spotted together on a romantic dinner date at RIhanna's favorite restaurant, L'Avenue, in Paris on Feb. 23, grabbing dinner. They were later spotted at a Paris nightclub Soixante Dix Neuf into the early hours of the morning on Feb. 24. She then joined Drake onstage and performed her hit "Pour It Up." Rihanna and Drake also did a live duet together of their song "Take Care" at the Palais Omnisports de Paris-Bercy in Paris.

RiRi and Drake were also seen together in Amsterdam on Thursday March 6, the day after Drake performed for fans at the city's Ziggo Dome during his current world tour. They dined together in a local sushi restaurant together in the Dutch capital.

After Europe, Rihanna is headed on tour with Eminem on the Monster Tour, as Marshall Mathers called it in an interview with XXL magazine back on February 21. The tour is only hitting three lucky cities: New York, Detroit and Los Angeles in August 2014.

With rumors of a rekindled romance between Rihanna and Drake, Chris Brown is apparently texting Rihanna. Drake and Brown are not on the best terms after a bottle-throwing incident at Soho nightclub W.I.P. back in 2012. Drake reportedly reportedly sent Brown a note saying, "I'm [bleeping] the love of your life," with a reference to Rihanna. A source close to the singers revealed to PageSix, "Chris started texting Rihanna on her birthday [Feb. 20], and the two have been sending each other a flurry of texts ever since."

"Rihanna didn't write back right away . . . but later that night she started getting sentimental and texted back, 'thank you,' and asked how he was," the source added. "Since then, the two haven't stopped texting each other and friends are freaked out that she's going to start dating him again." Brown famously assaulted Rihanna back in 2009, but the pair has been reported to be in an on-again-off-again relationship after the restraining order against Brown expired in 2011.

Do you think Rihanna and Drake are dating or just friends on tour?