Irina Shayk has moved out of the mansion she shared with actor Bradley Cooper, sources say.
The couple are reportedly "testing" their relationship and questioning "why they're still together".
Cooper and Shayk have a two-year-old daughter, Lea de Seine Shayk Cooper, who sources close to the couple say is the only thing holding them together.
Rumours that the relationship is on the rocks have been going strong since the beginning of the year, over speculation that Cooper and his A Star is Born co-star Lady Gaga could be "more than friends".
The rumours were exarcebated by Gaga calling off her engagement and by the actors' intimate performance of the hit song Shallow at the Oscars ceremony, with a very uncomfortable-looking Shayk sitting in the audience.