Inspired da LLCoyote
I was looking on Wikipedia and it detto Cat and Jade are best friends. I Amore both Jade and Cat but I've seen a lot of conflict between the 2.

Robarazzi
1. Jade says Cat is screwed up.
Survival Of The Hottest
2. Jade shouts to Cat to "Never speak of it," when Cat mentions Jade is sweating.
Cat's New Boyfriend
3. When Cat kisses Daniel, Jade immediately kisses Beck. This might mostra jealousy.
A Film da Dale Squires
4. Jade asks if Cat's hair dye gives her brain damage.
5. Jade slaps Cat, but it wasn't in the script.
6. Jade seemed happy to slap Cat.
Beck Falls For Tori
7. Jade tells Cat to colour a tiger (She didn't say it in a nice way).
Tori Tortures Teacher
8. Jade force-fed Cat cereal when Cat was trying to ask her something.
9. Jade force-fed her più cereal later.
Terror On cupcake Street
10. Jade yells at Cat to play with the keys.
11. When Cat starts to sing Jade yells at her.
A Natale Tori
12. Jade says she loves slapping Perky Red-heads. Meaning she wanted to slap Cat.
13. Jade yells at Cat in this episode.

Sorry there wasn't enough, but in lots of episodes Jade seems meant to Cat.