Rihanna and Chris Brown Rekindle Romance, Kiss aboard Celebrity-Studded Yacht Party

Rumors have been flying about a rekindled romance between musicians Rihanna and Chris Brown ever since their "accidental" same-destination vacations led to reports of them partying together in the French Riviera all this week.

Since their separate arrivals in France, Rihanna and Brown have been spotted together numerous times. The hip-hop duo were recently found dining together in Monaco on Wednesday. They have been spotted in similar situations (all seemingly romantic and private) in other European hotspots including Cannes, France. Following Wednesday's meal, Brown performed at the club Gotha in Cannes.

Most recently Rihanna and Brown were seen partying together aboard the yacht of Malaysian billionaire Taek Jho Low among other celebrity guests including lovebirds Kanye West and Kim Kardashian. A source on the yacht claims that Rihanna and Brown were openly sharing kisses with one another in front of fellow partygoers. Brown was also reportedly seen boarding Rihanna's yacht and heading into her cabin at four a.m. one night this past week, reemerging at 8 a.m.

After landing in Nice, France, on July 22, Brown met up with fellow rap artists Ludacris and Swizz Beats to begin the productions of a music video near St. Tropez - the same location were Rihanna parked her yacht to supposedly enjoy a vacation with her girlfriends. The rumor mill has circulated non-stop ever since.

Although Rihanna and Brown's actions and private tête-à-têtes prove suspicious, a rep for Brown insists "There is no Rihanna connection" concerning Brown's stay in the French Riviera. The rep adds that Brown has been traveling France with current girlfriend Karrueche Tran.

Keep up with Rihanna and Chris Brown's Twitters at @rihanna and @chrisbrown to check for any signs of sly tweet-flirts, something which both artists seem to be rather good at.