Reports by TMZ have surfaced and set tongues wagging as rumor has it that "Titanic" star Leonardo DiCaprio and "Pour It Up" singer Rihanna are dating. The two were apparently seen engaging in some serious lip-locking, flirting around and cozying up at designer Nikki Erwin's playboy mansion on Saturday, Jan. 10, 2015.

Erwin was celebrating turning 30 with friends at the opulent mansion along with her boyfriend and producer Chuck Pacheco. Other celebrities included in the guest list were Paris Hilton, Hilary Duff, Tom Hardy, Pamela Anderson, Naomi Campbell, and Tobey Maguire.

Several reports have surfaced that the two have been spending time together, with Pedestrian even reporting that the two partied together in St. Bart's while ushering in the New Year. Since Rihanna is currently single and DiCaprio broke off with 22-year-old girlfriend Toni, after a two year on and off relationship, so if reports are true it seems that the two are ready to jump into the dating bandwagon.

According to Glamour, the couple were also seen together at the after-party that took place in Leo's Los Angeles home. Celebrities gracing the after-party guest list included Naomi Campbell, 50 Cent, Paris Hilton, Ashley Benson and Jessica Szohr. Reportedly, the chemistry between Leo and Rihanna continued to soar during the wee hours of partying at his mansion.

A source reported to Pedestrian that Rihanna can keep Leonardo DiCaprio "on his toes" since she is unlike any of the string of model girlfriends DiCaprio has previously dated. The unlikely pair may be able to make it work as Rihanna has enough tricks in her closet to keep DiCaprio from straying. Whether the two will actually be a couple for long remains to be seen.