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Absence definitely makes the heart grow fonder for singer Michael Buble, who celebrated his one-year anniversary with Argentinean wife Luisana Lopilato at the end of March -- and told ET Canada that he hadn't seen her in months!

Pics: Michael Buble Extends the Wedding Party

"I miss her; I haven't seen her in a couple months," says the Grammy winner. "I was working and I was in Africa and all over the place, so it's been nuts. She's gone back and forth. Lot of Skype dates."

A lingerie model and actress, Luisana has been quite busy herself, and Michael says that although he's not possessive, he finds it a little "weird" to see her make out with good-looking "actor boys all the time."

Video: Michael Buble: I Heart Christmas

Watch the video to find out what Michael did for Luisana for their first anniversary -- and the gift she gave that "shocked" him!