The day Eren Jaeger, met you, many years ago —but never forgotten, always present in the back of his mind— he had already decided that you were his.
What could he possibly not like about you? In the midst of a hell full of titans and enemies inside and outside the walls, you were Eren's only safe haven, his paradise and the key to his freedom.
Everyone knew he was whipped, that the ruthless and feared holder of the Attack Titan truly had a one weakness, someone who could just snap their fingers and bring him to his knees, everyone knew he belonged to you, body and soul. He loved you madly and wanted you all to himself and him alone.
You were his one and only. His everything.
And if Eren had to be a slave, he would happily be yours for the rest of eternity.