Carrie Underwood. (Handout)

Mike Fisher and Carrie Underwood are engaged to be married, a source has confirmed this morning.

The blogosphere has been alive and buzzing since Sunday with rumours the celebrity couple have become engaged. The rumours began spreading after a friend of Underwood’s family congratulated the former American Idol and the Senators centre on their upcoming marriage on his Twitter page last night.

This morning, a source close to the couple confirmed to the Ottawa Sun that Fisher popped the question and Underwood has accepted the proposal.

Underwood, who makes her home in Nashville, was in Ottawa fthrough the weekend and was on hand for the club’s 4-1 victory over the Minnesota Wild Saturday at Scotiabank Place. It's not known if she will also be at tonight's game against the Boston Bruins.

Neither Underwood nor Fisher has made any public confirmation as yet.

The couple has been dating for approximately a year. They have kept their relationship largely out of the media -- quite an accomplishment for one of Nashville's hottest stars and one of the NHL's most eligible bachelors -- but had recently begun speaking in public about their love affair.