When you lose that one person you swore you would never lose, and you would die if you did.
You feel so unconnected from the world, your heart literally growing colder and shrinking daily because you cant't stand not being able to talk to them, see them, hold them, breath their precious aroma in.
All you have left are just memories of you and someone who first started out as a stranger, then to a lover then to a stranger once again.
Strangers with memories.