Kim Possible (2002)

S3E2 Emotion Sickness

In a bid to thwart Dr. Drakken, Kim finds herself in a skirmish with Shego, resulting in both of them getting a microchip that influences their emotions. When Ron mistakenly grabs the emotion control device instead of Kim's communicator, he believes it's a fun toy and begins to manipulate their feelings. As a result, Kim starts to behave affectionately towards Ron before they head to school. Now, Ron must navigate the unexpected romantic attention from Kim while figuring out how to resolve the chaos, all the while Drakken struggles with a lovestruck Shego.