Cooper, 44, and Shayk, 33, began dating in 2015 and share one daughter, Lea De Seine.
The now-exes attempted to put on smiles during the 2019 awards show season where Cooper and Lady Gaga were up for multiple awards for their roles in A Star Is Born.
But in March, Cooper only ramped up the cheating rumors as Lady Gaga's lipstick was spotted on his mouth!
Cooper and Gaga put their sexual chemistry on display during a sultry performance of "Shallow" at the Oscars in February. The two held their heads close to each other and nearly kissed as fans admitted they felt bad for Shayk, who was seated in the audience.
Cooper and Shayk were engaged. According to online reports, the mom ditched her ring following the shocking split news.