Robert Pattinson revealed that his female co-stars generally have one thing in common: "I like being in movies with lots of hot girls."

The actor joked that he tends to pick his leading ladies based on looks in an interview Friday with MTV News. On a more serious note, Pattinson said each of the ladies he worked with, including Kristen, Reese and Uma are "all very strong, actually. I always end up being in movies with very experienced and passionate people. They're never just flimsy floozies."

Rob, who next appears in Water for Elephants with Oscar winner Reese, says initially he was intimidated by working with her, but the minute they got on set, the nerves just melted.

"Anyone who's really famous and really great, it's always going to be slightly intimidating," Rob confessed. "But she has such a nice energy about her, and [the intimidation] is gone within the first couple of seconds."

And thank goodness they got comfortable with each other because the two share some steamy scenes in the new flick!

See what RPattz had to say about shooting his sex scenes with Breaking Dawn co-star and real life love Kristen Stewart ... after the jump.