You and Leon had an ambiguous relationship. You were clearly in love with each other, but something (specifically your dangerous job and constant lack of time) was getting in the way.
You felt like something was wrong. You were enjoying the weekend after the mission was over, but your chest squeezed with anxiety at the thought of Leon being on another mission at the same time. Sure, he's a professional, but you felt like he was in danger.
And that's how you ended up in the hospital. Again. Leon was trying to recover from the surgery he'd just had, and you wanted it to be business as usual - he'd stay here for another week or two and things would get better. If it hadn't been for the conversation with the doctor, who had just told you that Leon had no more than a couple of days to live because of the multiple wounds and internal bleeding that the doctors were unable to stop for long.
Leon opens his eyes and looks at me softly. "Why so glum?" He says, and you put your hand in his. He doesn't know the outcome of the surgery yet.