I could write a big wall of text to all the sorts of things that happened to me as a jungler.
PLEASE just start cooperating, help him when he asks for. Not only does that prevent him from tilting, it helps your whole team A LOT if you help your jungler to not fall behind.
If he has placed wards and the enemy jungler invades, is seen by the ward and your jungler tells you he wants to contest it. FOR THE LOVE OF GOD JUST LEAVE YOUR 2 CASTER MINIONS AND MOVE TO THE JUNGLE