J Lo and Ben Affleck are apparently not as lovey-dovey as they once were, if media reports of a recent spat are to be believed.

The fight reportedly took place at the Sundance festival, a showcase for Indie movies, founded and supported by Robert Redford.

After the fight, Ben apparently felt very bad. So bad, in fact, that he spent $2000 on flowers in an attempt to appease the demanding diva, megastar.co.uk reported on Thursday.

The news of the possible break-up has movie moguls worried because it comes just as a romantic comedy starring the pair is about to open at the box office.

According to the Sky News website, an insider had this to say: ?Obviously when Ben and Jennifer started dating it was ideal publicity for the film companies. But things have been pretty shaky since they had that huge fight at the Sundance Film Festival last week and we?re not confident they will go the distance.?

The insider went on to say: ?In fact we reckon the relationship?s on its way out and as they?re not working together anymore, it will only put more strain on it.?