Because acknowledging emotions is important to fully grasp the experience, I am going to take a moment to do so:
Dear Vaguely Familiar Emotion,
I think we have met before, but it's been a long time, and we've both changed. I'm not sure what to say, except,
I am fluctuating between speeding heart, crying, smirking, saying "I told you so", and laughing.
I want to sit on the couch with you, vaguely familiar but changed emotion. I want to be nude, wrapped in layers of fluffy blankets, legs and fingers entangled with yours, until I get to know your name again and your scent is on my skin. Long enough so that when you are gone I'm relieved. Just until I recognize you and love you for what you are, and the brief moment I have you, and don't need you back for a very long time.