A source close to Al Pacino has claimed the star regretted not marrying Diane Keaton during their on-off relationship that spanned two decades.

It was announced on Saturday by a family spokesperson that the Annie Hall actor had died, aged 79.

While no further details of the Oscar-winner’s death were officially released, an insider has since revealed it was ‘unexpected’.

Keaton and Pacino, 85, starred alongside each other in The Godfather trilogy as couple Kay Adams-Corleone and Michael Corleone.

They began dating in 1974 before splitting in 1990 after Pacino allegedly refused to marry the actor after she gave him an ultimatum.

Speaking to the Daily Mail, an insider has claimed it is a decision the Scarface actor has regretted since. They told the publication: ‘I know he will forever r

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