The `Hangover 2` star admits he finds "intimate" scenes embarrassing and is pleased he is rarely asked to shoot such footage with anyone.

When asked if he would film a sex scene with January, he explained: "I wouldn`t want to. I`d hate it. I`ve only had to do a few of those things where you have to kiss and stuff. It`s so embarrassing."

Despite January recently saying she found Zach to be one of the most naturally funny men she has met, the `Due Date` star said the pair were "very rude" to each other at a party.

He told Shortlist magazine: "If I remember correctly, she and I were very rude to each other. It was crazy. I was at a party - I`d never met her - and she was like, `Come sit down.` So I sit at her table and talk for 10 minutes, and she goes, `I think it`s time for you to leave now.`

"So I say, `January, you are an actress in a show and everybody`s going to forget about you in a few years, so f*****g be nice,` and I got up and left. And she thinks that`s funny?"
sections: Celebrities