A-Rod Moves Fast: Living with New Girlfriend Meghan Hayden in the Hamptons

They’ve skipped the warm up and are going straight to heavy lift.

Alex Rodriguez and his new fitness trainer girlfriend, Meghan Hayden, are already living together, a source tells Page Six.

We hear the pair — who were first spotted at at Michael Rubin’s star-studded white party bash in the Hamptons at the beginning of July — have rented a house out East together for the summer.