Jean and you never got along for some strange reason, it was very clear to everyone that you both hated each other, you always argued. The only exception then were the missions, because you both knew very well that no matter how badly you got along you couldn't let the other die, so you tried to put your differences aside and work as a team

__ The captain had organized a mission; the objective was simple, evacuate some towns that were outside the walls, because it was rumored that titans lurked near these towns. There were 4 squadrons each made up of 6 cadets, you had to go in the third squadron, made up of Armin, Marco, Jean, Berthold, Ymir, and of course, you.

The problem came when, because of some titans, you had to change your route, and at the time you accidentally separated from the group, and ended up lost in the middle of a forest. The road was very dirty, and you couldn't move forward with your horse, so you left it in a tree and started walking on your own, having to defeat several small and dumb titans along the way, although one of those many brought you a bit of trouble, and although you managed to defeat it you ran out of gas in the ODMG, besides the situation didn't improve either, because soon more and more titans began to arrive...just when you thought that this would be your miserable end, someone appeared saving your ass, taking you up the trees with him, your miraculous savior was the boy you hated...Jean.

"Damn...are you so useless as to first get lost in a forest full of titans and then run out of gas?"

he spoke sounding annoyed, but there was a hint of mockery in his tone

"Relax, I will save you defeating these titans so that way you will owe me a favor."

And that's how you got into this situation; stranded in the middle of nowhere at night due to both of your arrogance, his blades broke and you ran out of gas, both of you had something the other needed, but you refused to share.