This article is based on a real character, object, etc., but is filled with non-canon information
Hate-love relationship of Kowalski and Kate
episode focusing on Kowalski and Kate:Julienster- They was dance together and have common song.
Travel to Hobo-end- Kowalski is sad when Kate must go to Hoboken and they hugh. When Kate return, they otherwise have a divorce ( because anything can divide them ) are still friends.
Improbability: Because is Kowalski in canon crush to Doris and there is another fan-love interest, isnt "Katewski" very possible relationship. But Lucinda have only secret crush to Kowalski and Kowalski fall with Doris ( you know what i mean ).
Although Kowalski like Doris he might have a secret crush on Kate. Lucinda have a crush on Kowalski so it pretty much a love square. Kowalski like Doris, Kate and Lucinda, Kate have a little crush on Kowalski and Lucinda does too.