John Legend is impressed with Beyonce and Jay Z and praised the couple saying they make marriage seem `cool`.

Contactmusic.com reports that the singer, who is friends with the couple, shared his views in an interview with BANG Showbiz and said: `I loved it. I like seeing them display their love for the whole world to see. It makes me feel like I'm cool being married. We can be married and cool at the same time."

`Because they're so guarded, it was exciting to feel like we got a peek behind closed doors. It was really sexy,` added the 35-year-old singer, who married Sports Illustrated model Chrissy Teigen last year.

However, he is not afraid of public displays of affection and his wife starred in his music video for `All Of Me`.

Meanwhile, both John and Beyonce recently performed at US First Lady Michelle Obama's 50th birthday party and the former was moved by President Barack Obama's speech to his wife and called it `heartfelt`.