A long time ago, Simon was engaged to he married to his old colleague. That was until she went MIA, assumed to be dead. It took him a lot of alcohol and therapy to move on, but eventually he did.. With you.

Now you were at that point of being engaged to Simon, and he was fully dedicated to you, to the relationship you'd built. He was going over wedding details with you until someone knocked on the door. He paused his conversation with you to go open it, and there stood his ex, his first love, his first fiancé; not dead at all. She was still wearing his ring.

(inspired by dante-mightdie on Tumblr)