Andrew Stern shot himself in the head on Sunday whilst at a shooting range in the San Fernando Valley. The 40-year-old filed for divorce from the model in April after just four years of marriage.
Take a look at Leonardo Dicaprio's life in pictures.
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His wife Katie Cleary had recently been pictured cosying upto actors Leonardo DiCaprio and Adrian Grenier whilst attending the Cannes film festival, whilst Stern was reportedly suffering with the pressure of the split.
Friends of the entrepreneur told TMZ that Stern felt humiliated by the images, whilst a spokesperson from Cleary's camp say the encounters with both actors were completely harmless.
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Stern had a history of depression and was also struggling with financial strains at the time of his death.
Dicaprio and Cleary were pictured chatting at a party in Cannes, which was apparently the first time the pair had met one another.