Bradley Cooper has ditched girlfriend Zoe Saldana after three months because he's not ready for a relationship.

The news comes after a recent get-together between Saldana and Cooper's mother, Gloria - an indication that the courtship was turning serious.

But that's not the case, according to E! Online.

They broke up last week, a source close to The Hangover star and the Avatar actress told E! News. He dumped her, he just doesn't want to be in a relationship at the moment.

The source said Cooper, 37, and Saldana, 33, who met on the set of the thriller Words, are in different places in their lives, which further fueled the split.