Reports have been flying back and forth in the past week about Keith Urban and actress Nicole Kidman, and the stories were as different as night and day. They were breaking up, said one source. No, they're very much together, reported another.

Now, new sources are reporting that the two are headed for the altar—and they've already set a date!

Over the weekend, London's The Daily Mail reported that Keith and the Oscar-winning actress had ended their relationship, citing that Nicole had doubts as to whether Keith was truly ready to settle down. But this past Sunday, Jan. 22, the day the newspaper story broke, Keith and Nicole were spotted enjoying a cozy lunch in Nashville. Also that week, the couple was seen in several locales around Nashville, including a Starbucks in the upscale Green Hills area.

Now, it looks like the romance is heating up to a new level. Keith and Nicole are getting married in March, according to allheadlinenews.com, Virgin.net and MegaStar.co.uk.

Keith reportedly proposed to the Oscar-winning actress over Christmas. The two have never publicly stated that they're engaged, even though Nicole has been wearing an expensive ring, supposedly given to her by Keith.

A source in Britain's The Sun newspaper declares, "She's the happiest she's ever been in her life. They're happy and in love."

Keith and Nicole have not decided on a wedding venue, according to the various reports. They are said to be considering tying the knot in Australia, where they both grew up.

So, are Keith and Nicole about to become the next hot superstar couple? Stay tuned . . .