New York, Dec 24: It seems Cameron Diaz and Alex Rodriguez's alleged romance is getting serious.

The red-hot couple is still steaming up Cabo San Lucas with romps on land and in the water, reports the New York Daily News.

Diaz was clad in a sexy black bikini Wednesday when she and the Yankees slugger went paddleboarding. They also took a wild ride on some jet skis.

And the actress seems to be hitting it out of the park with Rodriguez''s two kids, 6-year-old Natasha and 2-year-old Ella.

Diaz has been snapped cuddling with both girls several days in a row. (ANI)