She has spent the past few weeks hopping from country to country on a whirlwind promotional tour with Tom Cruise for their movie Knight &  Day. But now Cameron Diaz is back in New York and back in the arms or Yankees hitter Alex Rodriguez.

The 37-year old actress was spotted with the baseball player, who turned 35 on Tuesday, and his two daughters yesterday as they headed into his home in the famous 15 Central Park West building in New York City.

Cameron and Alex were first spotted together at a superbowl party in February, only several weeks after A-Rod ended his relationship with actress Kate Hudson.

They have attempted to keep their new relationship very private by not being photographed together and showing up to events separately. nI grew up with the [Los Angeles] Dodgers, but now I’m a Yankees fan,' she told Harper's Bazaar.

When quizzed about her thoughts on marriage and children, Diaz said: 'What about it? If I say, "This is how I'm going to live my life," I am closing myself off to all these other possibilities. I'm the kind of girl who likes to be open to every possibility, who is open to all my options.'

'I think the big misconception in our society is that we're supposed to meet the one when we're 18 and we're supposed to get married to them and love them for the rest of our lives.

Bulls**t,' she told UK's Stylist magazine. 'Who would want to be with the same person for 80 years? Why not break it up a little bit?' Diaz has previously dated.

A string of high profile men including Matt Dillon, Justin Timberlake and Jared Leto. A-Rod married Cynthia Scurtis, a hairdresser in 2002 but the pair  divorced after it was alleged Alex had cheated with a stripper in 2008.