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Married actress Jenna Elfman was left red-faced during a love scene with her "Accidentally On Purpose" co-star Jon Foster. It turns out she enjoyed kissing him so much that she forgot her lines.

The comedy tells the story of a couple coming to terms with raising a child conceived during a one-night stand. Wonderwall publisher BermanBraun also produces the CBS Show "Accidentally on Purpose."

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The actress, who is married to actor Bodhi Elfman, admits she was entranced during an onscreen lip lock, and she was shocked by how good it made her feel.

She says, "My husband and I are (sexually) active, so it's not like I'm not getting that at home. But for some reason it felt really good kissing my co-star, and I've been kissing leading men for a long time so it's not anything new. I was totally enjoying how it was feeling and completely forgot my lines."

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Elfman admits she was so traumatized by the revelation that she now questions her acting ability.

She adds, "The moment I realized I forgot my lines because I was enjoying kissing my co-star, I couldn't believe it. I pride myself on being a (professional). That was the most humiliating thing."

RELATED: Read more about "Accidentally On Purpose"

"Accidentally On Purpose" airs Wednesdays on CBS at 8:30/7:30c. The season finale airs April 21, 2010.

BermanBraun produces the TV show "Accidentally on Purpose."