Just three months into their surprising romance, is Scarlett Johansson already moving into the Malibu home of actor beau Sean Penn? Us says yes.

Relocating from temporary digs at a West Hollywood hotel, the recently separated 26-year-old “has essentially moved in over the last few weeks.”

Scarlett and Sean Penn, 50, now share the same roof after months of furtive sightings in Hollywood, Mexico and beyond. Sources say it’s serious …

The pair “just stay home” whenever they can, says a source.

That means eating in and hanging with Penn’s kids with ex-wife Robin Wright, who aren’t much

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