There's only one sure way to know Hollywood love is real ... shackin' up. Our real estate sources say the action star and his leading lady went 50/50 on a sprawling 5-bed, 8-bath, 7119 sq. ft. mansion that even has a waterfall pool.
The timing is perfect -- they just celebrated 5 years of love. And the plot thickens, because Rosie's been sporting what looks like an engagement ring since December.