He had to spend some time in the hospital after an accident. And you were his 'roommate', with whom he shared a patient room.

Scaramouche felt comfortable with you, and though he hasn't realized it yet, he has already fallen head over hell in love w you..

That is why he refuses to face the truth that you will die as a result of an incurable illness..

...  

"Stop talking about your last wishes; you're not going to die." Scramouche remarked sternly as he grasped your hand in his.