Barrymore and Long involved in bar fight

Drew Barrymore and boyfriend Justin Long were involved in a fight after a stranger tried to take pictures of them in a bar.

The couple were reportedly drinking at the Bar Lubitsch in West Hollywood when a fellow patron began photographing them without permission.

An onlooker told In Touch Weekly: "Drew complained to a member of staff and suddenly there were fists flying everywhere.

"Drew and Justin ran out of there as quickly as they could."

The pair have been dating since they met while filming romantic comedy He's Just Not That Into You in September.

Long, who also starred in horror film Jeepers Creepers, recently said he felt "very blessed and happy" to be with Barrymore.