KIM KARDASHIAN's little brother Rob appears to have confirmed long-standing rumors he is dating R&B star RITA ORA by posting a picture of the pair kissing on his Twitter.com account.

Rob Kardashian and the British singer originally played down summer (12) reports they were in the midst of a blossoming romance, with Ora telling Complex magazine, "It's not really a relationship. It's not that intense."

She added, "He's a cool guy. We're close. We're good friends. I got his back and he's got mine."

But on Tuesday (30Oct12) the 25 year old sparked fresh new speculation they were more than just friends after uploading a shot of the couple posing for a picture as he plants a big smooch on the side of her mouth.

This week (begs29Oct12) he also shared an image of the pair cuddling on the sidewalk and another snap of Ora in a photo with her sister Elena, alongside a caption, which reads, "Miss my ORA".

Rob isn't the only Kardashian dating a musician - big sister Kim has been romancing rapper Kanye West since the beginning of the year (12).