Angelina Jolie is beginning to wonder whether Brad Pitt is having cold feet about their relationship, according to the latest reports.

The Tomb Raider star - who stepped out looking stunning with her beau at the Golden Globes yesterday - is said to be getting worried that Brad is losing interest.

A source close to the couple reportedly told the National Enquirer, "They got into a raging fight over the holidays because Angelina doesn't think Brad is committed.

"She is furious over Brad's casual approach to their relationship - and especially over his habit of talking publicly about his fear of commitment.

"Angelina is actually starting to think Jen nailed it when she said Brad had a 'sensitivity chip' missing."

The source adds, "Angelina is starved for physical and emotional affection because of the demands of raising six kids.

"There's no doubt Brad loves her and the kids - but Angelina wants to be certain his love is forever."

See Angelina and Brad mingle with the Hollywood A-list at the Golden Globes below