Jared Leto and Lupita Nyong'o have sparked rumors they are dating after being spotted flirting with one another.

The Hollywood stars - who have been nominated for the Best Supporting Actor and Best Supporting Actress awards at the upcoming Oscars - were seen getting cozy at the Crosby Street Hotel in New York City on Wednesday. "They were huddled at a corner table together looking very close," a source said.

The pair sparked they were getting close after they were seen spending a lot of time together at the Golden Globe awards in Los Angeles last month and various other events this month.

Lupita, 30, reportedly had an on-set romance with Chiwetel Ejiofor, 36, while filming Steve McQueen's 12 Years A Slave, but the relationship fizzled out after filming wrapped up last year.

Meanwhile, the 30 Seconds to Mars frontman had a high-profile relationship with Cameron Diaz in 1999, and the pair became engaged in 2000, before ending their romance in 2003.

However, Jared - who has also been linked to Taylor Swift and Alexa Chung recently - insists sometimes looks can be deceiving. "You know sometimes you get linked to someone you've never met and you're like, 'I wouldn't mind actually getting to know her,'" he told Marie Claire earlier this year.

Although, with a hectic working schedule and various other commitments, the 42-year-old actor admits he's not looking for love at the moment.