So, Mariah Carey and Nick Cannon have been dating for five whole minutes now, obviously the next step is the engagement rumor.

Mimi, doing her best to always keep the spotlight where it belongs -- on her -- flashed a huge, diamond rock on her left ring finger last night, at the premiere of her new movie, Tennessee. Also making waves was the sight of Nick, who remained very close to his new love, holding her hand at Tenjune's afterparty for the film.

When asked if the duo had gotten engaged, Nick's rep had no comment, but Mariah's young buck gushed that he loved "everything" about the pop diva.

If they are suddenly getting married, they could easily give Paris and Benji a run for their money in the Most Ridiculous Relationship category.