Have Rihanna and Drake finally decided to rekindle their romance? Speculations about the reunion of the 28-year-old 'Umbrella' singer and the 29-year-old 'Best I Ever Had' rapper has been swirling after they collaborated on Riri's new song 'Work.'

A source at Urban Islandz revealed that the two artists "are definitely hooking up again but I guess they are keeping it out of the public eye."

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"They always have a chemistry and sometimes it just take them to cross path again to spark that fire," the unnamed insider added. "Plus a lot of her friends like Drake and see them as a great couple like a real power couple."

In the meantime, the Mirror UK reported that Drake got "besotted" by Rihanna when they were together at the Libertine Club in London prior to their much talked-about performance at the Brit Awards recently.

Accordingly, this received a positive response from Rihanna  as she reportedly wants him to join her on her Anti world tour since "she wants him by her side as much as possible."

"Rihanna and Drake know that 'Work' is one of the highlights of the show and their on-stage chemistry is electric," a source said.

On the other hand, as Rihanna's world tour is about to kick off, it has been learned that she asked for some help from top vocal coach RAab Stevenson, who will join her to ensure that she will be at her best when she performs.

"It shows a level of commitment that Rihanna wants to get her set-up straight on the tour opener as RAab can work with her through any problems," a source dished. "She doesn't want to have to cancel any more dates and she's well aware of the scrutiny her comeback has faced."

TagsRihanna and Drake, Rihanna and Chris Brown, Anti Album