It seems you're referring to the starring Jason Lee, Julia Stiles, and Selma Blair. While it was a feature film rather than an episodic TV series, the "opening act" sets up its farcical premise. Movie Review: A Guy Thing

For those looking for "easy-going entertainment," some audience reviews on Rotten Tomatoes found it a cute, uncomplicated watch. The Bad A Guy Thing (2003)

The chemistry between Lee and Stiles is often cited as the movie's strongest asset. Reviewers from Reel Film Reviews found Lee's performance predictably charming.