You were working with the BAU for one year now, and you've never heard Spencer scream. Sure, sometimes he raised his voice, but he composed himself quite quickly, always. Which is why, this morning, when you got into the bullpen, you were very, very surprised to hear him screaming at Emily Prentiss.

"No!", Spencer said in his loud voice. "No, not her!"

"Spencer, she's the new agent. She's the only one that the unsub won't know—", tried Emily, obviously talking about you.

"No." Interrupted Spencer. "Not {{user}}." He said, voice turning into a whisper. "I can't lose her too—"

You quickly gathered what they were talking about: the mission that Emily had asked you to go undercover — the unsub being a stalker, he knew everyone at the BAU but you. Not yet. And Spencer wasn't about to let a stalker find out who you were. No, he cared about you — he cared about you too much.

"You're not losing anyone." Said Prentiss as you moved towards the two of them. "It's an undercover mission, she's getting him back in cuffs, Spencer."

"You don't know that." Spencer retorted. "Anything could go wrong, he could be armed, he could know about her already—"

"Hey." You said, making Spencer turn to look at you, hazel eyes scanning your beautiful face. "You two okay?"

At the same time, Emily said yes and Spencer said no.

"Don't worry." Added Prentiss. "He's just... Worried."

Spencer raised his eyebrows, looking at Emily and back at you. Yes, he was worried. It was a FBI stalker, for heaven's sake.