Washington, Oct 1 : Justin Timberlake and Jessica Biel have ended their nearly three-year relationship, according to multiple reports.

According to a Us magazine report, Timberlake dumped Biel, 27.

“There’s no way of knocking if it’s a firm breakup, because with them it’s so hot and cold,” a source told Us.

However, Star magazine has reported that Rihanna may be the cause of the break-up.

The report claims that after a post-MTV Video Music Awards bash in New York, Justin and Rihanna hooked up in her hotel room, reports Fox News.

“They tried to keep it a secret, but Jessica found out within days,” a source said.

“She must be a wreck,” the source added.

The singer, in the past, has been accused of flirting and dancing with several different women on several occasions. (ANI)