Michael Bublé believes one thing is the key to his marriage's success

Michael Bublé credits one very important element for the happiness he shares with wife Luisana Lopilato and the success of the couple's four-year marriage. Since wedding in 2011, the singer says he and Luisana are best friends who wholly support each other.

"My wife and I are two of the most supportive people that we know in a relationship," Michael told People. "She's my best friend. When something good happens, she's the first person I want to tell, and equally when something bad happens."

Michael said he and Luisana are best friends.

The couple are parents to two-year-old son Noah, and are expecting their second child – another baby boy – in the New Year. While they are often forced to spend time apart because of their busy schedules, for Michael family will always come first.

"My happiness is to be embedded with these two and they're my whole world, so the truth is I wouldn't be happy without them," Michael explained. "I find no fulfilment being that Hollywood story that you hear about; the artist who leaves his family on a search for the perfect career. That won't happen here."

Reunited and it feels so good !! I missed them way too much !! #ny #family #myhappyplace

A photo posted by Michael Bublé (@michaelbuble) on

The couple are expecting their second child in the New Year

Michael also said he often relies on technology to stay in touch with his family at all times while he's travelling with work, explaining: "Even if that means I can't be there physically, at least I can be there on Skype or whatever."

The Home singer announced that he and Luisana were expecting their second child together with a sweet video shared to his Facebook page in July. Michael has since revealed that they are set to welcome another son, and explained that they decided to have more children because of their love for their firstborn, Noah.

"Noah's two and I already miss him when he was a baby," Michael said. "We love that part so much that how can we not want to have that again?"

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