Rihanna 'takes the lead in Leo romance'

Leonardo DiCaprio apparently isn't the boss in his alleged relationship with Rihanna.

The two first set tongues wagging at the start of the year, after it was reported they rang in 2015 together in St Barts.

The rumour mill has gone into overdrive ever since, and Rihanna's recent lavish 27th birthday party was the icing on the cake - as Leonardo is the one who threw it for her. The night also provided the first photo of the pair together.

"Leo and Rihanna were very flirtatious all night, it was obvious they were together. There were lots of kisses, smiled and lingering looks, but Leo let her have her space to be the star of the night," a source revealed to British magazine Grazia.

"Rihanna is by far the most independent woman Leo has ever dated. He tends to be the boss, but with Rihanna it's different. They're equals and it's a good change for him."

Both stars have enjoyed numerous high profile relationships, with Leonardo favouring fashion models such as Toni Garrn and Bar Refaeli and Rihanna going for singers Chris Brown and Drake.

However, sources say they're both really into each other and don't want to rush the romance.

"They're still taking it one day at a time, but right now they're having fun," the insider said.

While her own love life is going swimmingly, it's thought to have come as a surprise to the Barbadian singer that her ex Chris has allegedly fathered a child.

Rihanna and Chris dated on and off for five years, causing a media stir when it was revealed Chris had badly beaten Rihanna in 2009.

Despite their many ups and downs, Rihanna is said to be in disbelief.

"Rihanna is shocked and had to read the reports four times before it finally sunk in," an insider tells HollywoodLife.com.