You Can't Say No

This idiot never thinks about the consequences of his actions. Without him by her side, she probably wouldn't even know how she died. But taking care of her has become a habit. What should he do? Should he let go? He always wears that sour expression, and nobody wants to get close to him. At least she's there by his side, or he'd be bored to death. But it's strange: why does everyone always say he's the one taking care of her?