"The Big Bang Theory" is set to give Penny a new friend. Leonard, of course, is not going to be thrilled. Are they headed to splitsville - again?

Jealousy is one of Leonard's biggest weak points. Sheldon has once said he could be such a "needy baby, greedy baby." When Penny gets close to another man, it is difficult to imagine Leonard being cool about it.

Leonard is likely to pull a Ross Geller, i.e. drive Penny crazy with his insecurity. Penny could respond the way Rachel Green did in "Friends," and this will push her over the edge. She has already described her relationship with Leonard to be boring. He's got to be careful now.

In its report, The Hollywood Reporter revealed Penny will be going back to school. And this is how she'll meet a certain guy named Cole (Ryan Cartwright guest stars). How would Leonard react? TBBT fans will see this develop in the show's Nov. 15 episode.

On a side note, Penny should understand Leonard's jealous streaks. After all, she did get jealous in last week's episode -- when Leonard made friends with Sheldon's new assistant, Alex.

Howard's Space Feat 'Minimization'

Fans had fun in last week's episode seeing a double date game of "Win, Lose, or Draw." However, it was all too bad for Lonely Boy Howard. Will the gang make up for the schedule snafu in this week's episode?

This week, the geeky friends observe Halloween at Stuart's comic book store. And Leonard tries science to seduce Penny. How will that work out?

"The Big Bang Theory" Season 6 Episode 4 (Halloween episode) airs Thursday night U.S. time.

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