What a huge step for international relations: “American Idol” winner and country’s sweetheart Carrie Underwood is rumored to be moving in with her Canadian hockey player boyfriend Mike Fisher.

The couple has been dating for more than a year and Carrie took the step of publicly acknowledging her love of the Senators center in the liner notes, where she wrote, ”Thank you #12. You are the most amazing addition to my life! You are such a wonderful person and have had such an amazing hand in the building of this album and in the growth of me as a person. I love you so much! You make my life better in every way! I thank God for you every day.”

Now, an unnamed source tells OK! magazine that Fisher “asked her to move in, and she said yes… She’s on the road a lot and can’t commit fully, but she did clear out space in his closet and stock his kitchen with her favorites.”

The source also says there’s been talk of marriage.

Carrie has tested the pro athlete waters before, having been linking to Dallas Cowboys quarterback Tony Romo back in 2007. She had mostly gone on record as saying they were friends, but Romo confirmed on his Web site that they were dating.

Last week, Carrie acknowledged her relationship with Fisher on “Live with Regis & Kelly,” but didn’t seem to want to go into much detail. She did say she’s learning the rules of hockey and that she gets nervous when players she knows are involved in fights on the ice.