5 years.
That was the last time Aerith has ever spoken to him.
Riley had done all sorts of evil things while dragging Aerith along with him, and yet at that time, not even a single word escaped from her lips. She refuses to speak with him or to any other people, not even once.
Riley thought she would stop him when he massacred Elder Skeem and his entire people, but no—she just watched.
He also went back to Ahor Zai and tortured the Grand Elder; broadcasting it to the entire Known Universe, and yet Aerith remained silent.
And now, even as they were teleported to this mysterious planet—Aerith refused to speak. Even as their ship disappeared, making them officially lost—Aerith's voice has never once again graced Riley's ears.
"Do you want to die, Aerith?" Riley then breathed out, "If you do, then just tell me and I will join you after killing you. Anywhere with you, Aerith."