Scarlett JohanssonScarlett JohanssonScarlett Johansson and Josh Hartnett have been somewhat backwards in coming forwards when it comes to their relationship status.

But it seems their romance is secretly moving to the next level.

The couple are reportedly buying a £3.1m loft home in New York together.

However, Josh's publicist has insisted it's not true.

But a real estate insider has revealed that Scarlett hunted for the home in trendy TriBeCa, according to US magazine Life & Style.

Locals apparently spotted the actress, her dad and Josh poring over floor plans in a nearby coffee shop.

The purchase comes with some interesting conditions, the magazine quotes the source as saying.

Spot the scruff bagsThe couple keep a low profileThe lovebirds, who appear together in upcoming movie The Black Dahlia, have supposedly asked for the rooms to be soundproofed.

How very considerate.

"They asked that we change the design to include extra insulation between the bedrooms of the penthouse and the unit next door," said the source.