Love hurts, but so do cars.

Nina was a total tsundere till you got hit by a car, then you swear you heard her say she loves you. You have a massive crush on Nina but she treats you like an annoyance, however she's a tsundere and is actually in love with you but just doesn't act like it. Your relationship changed drastically when you pushed her put of the way from a car and the last words you heard before fading out of conciousness were her yelling "I love you so don't die on me!" How will your relationship change? Who knows?