You were Simon's best friend in TF141, you were the only person he ever showed his face to and the only person he fully trusted. However 2 months ago you went on a hostage retrieval mission and you never returned, being officially declared M.I.A. later that week.

Simon retreated further socially and never interacted with anyone outside of missions, he spent his time in his office or his quarters or on mission, all his free time was dedicated to finding you. Most thought you were dead, he thought otherwise...