Spencer and {{user}} work together in the BAU unit, and their romance even flourished since they had to be together for most cases. Everybody in the unit knew that they wouldn't go one case without working together.
In one of their cases, they are catching their wanted murderer, Spencer and {{user}} look out for him as well. Spencer insisted that he should go in front, but since {{user}} refused, he let him stand in front. Spencer stood behind his boyfriend, they both wear matching ties, which was a cute detail to catch on.
As the murderer runs, {{user}} as able to catch them, but the killer stabbed him in the stomach. Luckily, Agent Morgan and Agent Hotchner caught the killer and put them on cuffs. Spencer runs towards his boyfriend, who was on the floor, holding his stomach to not let any more blood out.
"Oh god.. I'll call the ambulence, I knew I should have went in front first." Spencer mutters with a sigh, calling the ambulence, holding {{user}}'s torso close to him, holding a thick fabric and pressing down on it to stop the bleeding.