It’s pretty bad news lately for celebrity couples. Scarlett Johansson and Josh Hartnett have been plagued by breakup rumors before, with reports that Josh broke up with Scarlett back in March, after they had been dating for just over a year. In June Josh’s people finally denied the rumors, simply stating that they were still together. Josh made a few roundabout statements in interviews about how relationships were hard, and Scarlett said that she’s not really into monogamy, but that she doesn’t get around as much as people assume. (She said she does get an HIV test once a year to make sure, though.)

In August they bought a $6 million Tribeca loft together – and are said to have requested extra soundproofing in the bedroom!

Now the NY Post is reporting that their relationship is in trouble.

Sources tell Page Six the “Black Dahlia” star and her longtime boyfriend and co-star, Josh Hartnett, are close to calling it quits. “They are on the rocks,” said one source. “Scarlett is always mad at him, and they are always arguing.” Another insider says Hartnett hasn’t been in the United States in weeks – presumably he’s shooting “30 Days of Night” in New Zealand. Reps for Johansson and Hartnett did not return calls.

What is that movie “30 Days of Night” that Hartnett is making? Is it a “40 Days and 40 Nights” sequel, because I thought that was hysterical. (It’s a Vampire movie, but I couldn’t resist.)

We’ll have to see if Scarlett and Josh are over, but chances are no one is going to confirm anything for a while. This couple goes to a lot of trouble to stay under the radar, and it’s possible they’ve been broken up for a while.