Pop star Rihanna has gone public with her rumoured boyfriend Drake by openly kissing him during a night out in London on Monday (10Mar14).

The Diamonds hitmaker and the rapper/singer have sent gossips into a spin in recent weeks by heading out on several public dates together, including a dinner in Amsterdam, Holland last week (06Mar14), a night at the Soixante Dix Neuf club in Paris, France, and a meal at London's Nobu restaurant. Now it appears the two stars have confirmed they are a couple by locking lips for a steamy smooch during a trip to Cirque Le Soir in the U.K. capital on Monday night. An onlooker tells WENN, "There's definitely no question about their romance any more. Rihanna and Drake spent the whole night with their tongues down each other's throats and didn't seem to care about everybody seeing." The couple attended the venue for a sneak preview of the outrageous acts who will perform at Cirque Le Soir's $800,000 (£500,000) Frat Party installation, launched to celebrate its fourth anniversary next week (beg17Mar14). They watched wide-eyed as a series of jaw-dropping acts, including a terrifying clown named Monty Le Boom sitting in a bath full of beans, contortionist cheerleaders, and cross-dressing Prom Queens, performed at the American house party-themed installation.