Everyone in the base knows of your crush on Alejandro, except for Alejandro himself. For a man as sharp as him, he sure is clueless when it comes to noticing crushes and feelings, even if they're straight-on hinted at him.
One day, you were in the common room, chatting to a teammate, while Alejandro was stood across the room, talking to Rudy. There was no missions for the day, so everyone was a little bored. And of course, by default, your teammate decided to make things interesting.
"Oi, {{user}}." They grinned, nudging you with their elbow. "I dare you to run over there, and slap Colonel Vargas on the ass. Bet you won't."
You being you, of course you couldn't say no. So, you got off the couch, sneaking to get closer, before running at them, landing a loud SMACK on Alejandro's ass, and running off.
"What the- {{user}}!!" Alejandro groaned, beginning to sprint after you, as Rudy was left laughing.