The former Dawson's Creek star, 31, has been dating the Inglourious Basterds actress since 2006 and has been jetting between Paris, France, where Kruger lives, and Vancouver, Canada, where he shoots his hit sci-fi show Fringe.
But Jackson hints he's willing to give up his Transatlantic lifestyle to build a future with Kruger - as soon as the former model hints she wants to walk down the aisle.
He says, "We shoot the show in Vancouver but my better half lives in Paris so I spend half my time there.
"I think that (marriage) might be a possibility, it's working out well. She's German, she'll tell me when it's time to get married."