The bar staff, however, did not comply with the request. Instead, they shared the message with their 8,500 followers.
They commented: "For anybody else considering offering us cash to casually stalk their partners.. we are a bar, not private investigators / professional perverts.
"We can however add some finishing touches to the reserved area such as personalised name cards & bubbly on arrival!"
For anybody else considering offering us cash to casually stalk their partners.. we are a bar, not private investigators...
Posted by Filthy's Newcastle on Thursday, 27 July 2017
The post went viral and the hilarious comments kept rolling in.
One Facebook user wrote: "The girlfriend needs to be warned about what kind of bloke she's with woah".
And another added: "Should have took money found out who she is and save her from him. Clearly he is a psycho."
One Facebook follower even commented that his controlling ways weren't his only issue: "Controlling and bad grammar? Girl needs to leave that."