Cameron Diaz and ARods Late Night Flight

Trying to keep their relationship under the radar, Cameron Diaz and Alex Rodriguez were spotted sneaking onto a helicopter at a New York City helipad last night (July 18).

The Yankees stud and the “Charlie’s Angels” chick left a birthday party at the 40/40 Club and were whisked away to LA via chopper for A-Rod’s upcoming game against the Angels in Anaheim, California this week.

In related news, Rodriguez is trying out his acting chops with a role in the forthcoming comedy “Friends with Benefits.”

Alex joins big names like Justin Timberlake and Mila Kunis in the film, which starts filming in New York later this month.