Rihanna and Drake are dating exclusively

Rihanna and Drake have become exclusive.

The 'Hold On, We're Going Home' rapper is reportedly the "happiest" he's ever been since rekindling his short-lived romance with the 'Pour It Up' singer and the couple are so smitten with each other they have decided to stop dating other people.

A source revealed to TMZ.com: "[Drake's] in the best mood he's been in a long time."

Insiders claim Rihanna, 26, is serious about committing to Drake, 27, because he treats her so well in comparison to her on-off ex-boyfriend Chris Brown, who left her bloodied and bruised when he physically assaulted her during an altercation in 2009.

DON'T SPEAK TO CHRIS BROWN

Drake has given Rihanna an ultimatum by banning her from speaking to her ex-boyfriend Chris Brown if she wants their relationship to become serious.

A source told the Daily Star newspaper: "Rihanna and Drake are just having fun at the moment. Neither of them are relationship people really. But Drake has made it clear that if things are going to get serious with them, he doesn't want her speaking with Chris.

"They are never going to get along properly."

Despite their turbulent past, Rihanna, has never been able to stop complete contact with Chris, who left her bloodied and bruised when he physically assaulted her during an altercation in 2009.

Earlier this year, the former lovers, who dated on-and-off for three years, began texting each other more regularly.

However, Rihanna won't be seeing Chris for a little while as he is currently behind bars after he allegedly violated a judge's order by getting kicked out of the rehab facility in Malibu last week.

The 'Fine China' hitmaker was chucked out of the facility for allegedly breaking "internal rules" and, although it is not known what he done, it is not believed to be linked to violence or drugs.

Chris had been ordered to spend time in rehab for anger issues after an alleged assault in Washington D.C in October, which stemmed from his attack on Rihanna five years ago.

NEXT STEP

The next step in the couple's relationship follows a series of outings together in recent weeks as Rihanna accompanied Drake in a number of locations including London , Paris and Amsterdam throughout the European leg of his 'Would You Like A Tour?' world tour.

Meanwhile, sources close to the couple claim Rihanna and Drake have been headed towards a relationship for a long while following their brief fling in 2009.