The actor was all smiles as he frolicked on the sand with the bikini-clad woman.
The jury is still out on who she is, but she clearly meant a lot to Adrian as the two barely spent more than a moment a part from each other.
In addition to their hot and heavy make-out session, The Devil Wears Prada star was spotted giving her a rubdown as she applied suntan lotion on him.
The actor, who was wearing red, white, and blue trunks, did manage to steal himself away from the blonde to catch some waves.
Meanwhile, she flaunted her six-pack abs back on the dry land.
After the two finally tore themselves from the ocean, they were seen fully dressed looking as happy as ever. He threw on a white T-shirt and she donned a flirty red and white polka dot dress and jean jacket with a camera around her neck.
What do you think of Adrian’s new gal pal? Sound off in the comment section!