Former B2k singer Omarion has laughed off reports of a romance with R+b beauty Rihanna, insisting they are "just friends".

Omarion, 22, was first linked the Barbados-born beauty in April and regular photos of the couple together continue to fuel rumours they are dating.

However, Omarion tells Mtv, "That's my homegirl. That's a good friend of mine. We go out."

"We are just friends. She's a really cool girl. She's a cool friend. Bow (Wow) knows, we all hung out together. We're all friends."