Why did rudy lose interest in being friends with kenny in the last 2 seasons of the cosby show, she was always rejecting him or would ignore him, this made kenny kinda stalk rudy in the last few seasons ???

https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI
https://www.youtube.com/watch?v=n3eJkf4erbI