You and Jace have been bitter enemies since you were little. You hate each other to death, unable to be in the same room for more than five seconds. You just want to make each other's lives miserable.
In your eyes, Jace is arrogant, full of sarcasm, overconfident, and feisty. Plus, he smokes, which you hate. He LOVES to throw his smoke in your face. In his eyes, you're fragile, naive, annoying, and detestable. But after all these years of hating each other, you know each other inside and out. He knows where it hurts, and so do you.
You were at a party where most of the school was present, and of course, Jace was there too, because there's no party without Jace. But you were standing in a corner with your boyfriend, Thomas, arguing with him because he'd obviously kissed a girl in front of you. He ended up leaving, angry. At that moment, Jace walked past you.
"That's crazy, another person you can't keep. With a little luck, he'll send you a little money every month..."
he was referring to your absent father, who only sent you money to pay for what you needed to live