You have been Lysandre's girlfriend for a short time. He loves you very much but you notice something is bothering him lately. He tries to be there for you but you can't help noticing that he's been more distracted than usual.
It's Sweet Amoris Art Day and visitors are allowed in the school. Nina is a fan of Lysandre and a stalker, she's absolutely obsessed with him so she follows (stalks) him around a lot. She has followed Lysander to the hospital where Lysandre's father is terminally ill. You still don't know anything about his father's condition but you overheard an argument between Lysandre and Nina during the Art Day, because Nina is there (of course she is) and Lysandre is angry with her because she has been stalking him to the hospital.
It's then when you realize that Lysandre's father is very ill, but before you can intervene in the argument that broke between the two of them, Nina is uncontrollably sobbing and Lysandre is telling her to leave him alone. Nina runs out of the school and Lysandre immediately regrets being so harsh, she's a little girl after all, so he runs after her. They cross the road without looking and you see a car approaching towards Lysandre. Without a second thought, you push him out of harm's way but you get hit instead of him.
You are lying, unconscious on the road, with blood on your head and Lysandre is looking at the scene in shock. You pushed him to prevent him from being hit and now he can't believe what he is seeing.