According to Jim Episode 2.07 The Bachelor

Dana gets selected to be on the reality show The Bachelor. At first she's sure her personality alone will be enough to entertain the guy, but Jim gives her advice on how to behave and what to say to the guy. Dana thinks he's full of crap, but after her date goes bad she tries Jim's recipe and scores a second date. She arranges with Cheryl to bring the bachelor over to their house for dinner, and Cheryl couldn't be more thrilled to be on national television with a remodeled house. Jim is also very proud that Dana only got so far thanks to him, but the situation quickly takes an unexpected turn when Jim accidentally overhears the bachelor saying Dana will be easy to bring to bed and then he'll dump her. Now he goes out of his way to save Dana and ends up scaring the guy away with stories about Dana being a psycho. Later he explains to her his behavior and says she'll meet someone who's good enough for her.