I'M IN SHOCK AND IN NEED OF THERAPY. (ep 8x12)

Do not read if unsure, I see spoilers.

How could this happen??? 8 seasons and only 1 true love interest for my fav. And she's dead???? I can't stand it. I'm soo hurt and furious, I'm in need of comfort. I loved their relationship. I was already thinking about her getting introduced to the team and blushing genius love and cute cameos. Now Reid is left in the trauma again. Why???