My Sweetheart Kitty is the 12th episode of Season 6.
Plot
Vinnie tries to get Sunil to break up with Deliah after growing tired of him paying attention to her than Vinnie. But then another cat comes to the daycare and Vinnie quickly falls for her until he realizes that this is causing a rift between him and Sunil.
Plot
Characters shown in this episode
Sunil
Vinnie
Delilah
Blythe
Buster Bunny
Lief
Twilight Sparkle
Fluttershy
Wakko Warner
Russell
Zoe
Minka
Penny Ling
Pepper
Strawberry Shortcake
Buttercream