Justin Timberlake, who has been dating actress Jessica Biel for more than two years, and singer Rihanna were spotted together in New York a couple of times. Rumors say the two might have been secretly hooking up and that Justin is planning to dump his girlfriend for Rihanna.

“Justin and Rihanna have been seeing each other for the past few weeks,” a source close to Rihanna told Showbiz Spy exclusively. “He is really into her and it’s only a matter of time before he dumps Jessica.”

The source added, “It was at 10ak in NYC and they left together. They are seeing each other on the low!”

The chemistry between Justin and Rihanna is evident in the music video for “Rehab” (photos below), a song he and Timberland wrote for the ‘Umbrella’ singer. We just cannot believe someone can ever dump super sexy Jessica Biel but it seems like their relationship has been on the rocks for a long time.

Rihanna & Justin Timberlake Rehab Pictures