The source also claimed that a "war erupted after George organised a boozy celebration with his buddies and Amal stormed off!
“George wanted to let his hair down and he set up a tequila-soaked bash for him and his close pals,” an insider claimed.
“That irked Amal in a big way, because she hates it when George drinks too much and she begged him to do something healthy,” they continued.
“Amal’s sick of seeing George eating like a pig and snoring like a bear after those boozy outings, not to mention how he puts his health at risk by making these bad lifestyle choices,” they added.
The source went onto claim that as a result, Amal "walked off in a rage and left him to ring in his birthday alone."
The Clooneys have yet to respond to the National Enquirer's sensational claims.