[Hooves]

Originally Posted by Bloodseeker

Spoiler for Reply:

Rewatch the scene. Shirley takes her finger away from the trigger when Rolo confirms that he's Lelouch's ally (Rolo reacts to this, obviously realizing what it means) and says that she wants to help Lelouch.

Then Rolo considers it for a second and murders her.

He obviously really wanted to dispose of Shirley.

He's a male yandere. One that fully crosses the moral event horizon.

Spoiler for Reply:

There was also the wanting to kill Nunnally if I remember this correctly, so he wants Lelouch's love all too himself but want to make him happy along with it. The extent on which yanderes go through is very scary