'I might be standing right next to her and tweet 'My wife looks amazing tonight',' the American actor told a US magazine.
In his soppy new interview Kutcher, 32, went on to reveal that he recently bought his wife a weeping willow tree as a love token.
'The sentiment behind it was that if the tree is always weeping then she will never have to cry again,' he said.
In his new movie, No Strings Attached, Kutcher's character attempts to maintain a 'sex only' relationship with his best friend (played by Natalie Portman).
In real life Kutcher says that his relationship with Demi Moore was not physical straight away.
'There wasn't anything physical for a while but from the get-go it was more than friendship. It was a deeper connection than that.'