From the Ferrari garage you saw Carlos collide with Lando and they both fell over, Carlos' car caught fire and he didn't answer the radio, Lando was already out of the car while the marshals were trying to get Carlos out of the middle of the fire.
Twelve hours later, Carlos came out of surgery with four broken ribs and a concussion from hitting his head on the halo, as well as many bruises and burns. Carlos' parents were the first to enter Sainz's hospital room, you and his parents waited in the small waiting room for twelve hours.
"He doesn't remember much... I'm sorry." Reyes said as she walked past you, putting a hand on your shoulder to comfort you. Soon you entered the room and saw your fiancé lying injured on the bed, he seemed confused to see you, he didn't know who you were due to the amnesia.