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 (07) 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."