London: Funnyman Russell Brand and partner Jemima Khan have reportedly called time on their relationship following just a year of dating.
The couple have also unfollowed each other on Twitter, reports suggest.
"The relationship's simply run its course," a source said.
The pair have been dating since last summer.
Brand, 39, was a regular overnight visitor at her Oxfordshire mansion, which she shares with her two sons from her marriage to Pakistani cricketer-turned-politician Imran Khan.
Khan and Brand, who was previously married to pop star Katy Perry, were often seen walking arm-in-arm.