The Voice judge confessed that he was a rowdy star before meeting his wife, partying until the early morning, according to Us Magazine.
"I was a single male country singer raising hell, going out after concerts to bars and drinking and doing whatever I wanted," Shelton said.
Elaborating on his change of heart, he stated: "I grew tired of going out drinking until 7am and then waking up at noon and eating pizza. Now if I want to go drinking, I only want to sit at the house with Miranda watching Snapped on TV at home."
Shelton wed Lambert last month in front of 500 guests at a ceremony in Texas.
Lambert performed on The Voice this week, singing 'The House That Built Me' with Dia Frampton.
Watch Miranda Lambert and Dia Frampton perform 'The House That Built Me' on The Voice below: