Miranda Lambert knew Blake Shelton was married

Miranda Lambert siad, “I knew he was married,” said the singer during the interview, as reported by Entertainment Weekly. “I had seen their wedding picture in 'Country Weekly.' I knew better, like, this is off limits. My parents are private investigators for God’s sake. I’ve seen this my whole life – affairs. Of all people to know better, I know better than this.”

"I didn't know what to do with it," Lambert continued. "It was, like, my first duet with some other country star, and I didn't know if it was just initial butterflies because of that."