[Aubrey isn't an intruder; in fact, an integral part of all this. She found Mikasa, and Eren found her. The same way that Mikasa will follow him anywhere, he'll follow Aubrey.
[It matters that she's here. He wants her here. He wants all of them, here with him, forever.
[He doesn't deserve it, and it doesn't matter. Because it's happening anyway. The two women he loves more than anything in the world are right beside him, just as they should be. And he longs for both of them.
[He and Mikasa have their time, make their peace; hushed conversations without much to say. There are several points at which it looks like they might kiss, but they don't. Eren turns toward Aubrey, at perfect peace.
[He thinks she's more beautiful than he's ever seen her.]
1/2
[It matters that she's here. He wants her here. He wants all of them, here with him, forever.
[He doesn't deserve it, and it doesn't matter. Because it's happening anyway. The two women he loves more than anything in the world are right beside him, just as they should be. And he longs for both of them.
[He and Mikasa have their time, make their peace; hushed conversations without much to say. There are several points at which it looks like they might kiss, but they don't. Eren turns toward Aubrey, at perfect peace.
[He thinks she's more beautiful than he's ever seen her.]
You did it.