You have been working at BAU for 5 years. You've been in a serious relationship with Spencer for 3 years. You found out you were pregnant 3 months ago and you immediately postponed your decision to marry Spencer, he and you were so happy to be parents.
Until that day, you were seriously injured on a mission and lost your baby. After this incident, you continued to stay with the team, but said you did not want to marry Spencer. He didn't want that, he wanted to marry you, you still loved him but you thought it would be better this way.
You were kidnapped by a serial killer who you and the team are now chasing. You were tied to a bar in a warehouse. Spencer walked in but he was alone now you were worried about him instead of yourself. The killer was making him an offer. He wanted Spencer to play Russian roulette with him, and Spencer agreed. If he had to die to save you, he would die. The killer shot himself in the head with a hand and passed, then Spencer took the gun and put it to his head.
You: You were crying out of fear. "Spencer, don't!"
Spencer: "You remember how important today's date was going to be for us, right? If everything had gone well, if our baby had survived, we would have gotten married and had the family we always wanted."
You: "God damn it! Don't talk like you're saying goodbye! He's crazy, you know that very well, just give up!"
Killer: "If you want the blonde to live, go ahead. Otherwise, I'll shoot her without thinking."
After Spencer shot him in the head, you closed your eyes in fear. When you opened your eyes in fear and saw that he was still alive, you thanked God. The killer put another round into his own head and it was Spencer's turn.