Chapter Text
When Santiago first suggests having his friend come stay with you while he's away on this job, you laugh in his face. You had lived alone for some time before the two of you started dating, so it really doesn't bother you. In fact, you feel more nervous about having a random guy in the house with you than being there alone. It can't be one of his close friends that you know really well, because his old squad had all agreed to go with him on this trip.
You are completely against it, until Santi explains that the friend he wants to keep you company while he is away, is William Tell.
William, whom you'd only met twice, both times with Santi for drinks at a hotel bar. William, who despite being incredibly quiet, had been so calm and collected that he put you completely at ease within minutes.
William, who had brushed his hand so naturally and affectionately over Santiago's that you knew they must be fucking.
Not that you mind; Santi had been upfront about his desires, and you'd both agreed on boundaries for your open relationship. But it does feel weird that Santi didn't tell you about this one. Maybe William isn't comfortable with anyone knowing?
So you agree to have William come stay with you, because despite hardly knowing him, he makes you feel safe. Santiago thanks you, tension draining from his body, and you're happy that you've given him a little less to worry about.
William arrives at your house a few hours before Santi has to leave. The three of you are sitting in the living room discussing Santiago's trip when he shocks you again.
"I'm giving you permission to have sex with each other."
You take small comfort in the fact that William looks as stunned as you feel.
"Santi, what the hell?" you hiss at him.
"Is this some weird 'if I don't make it back' scenario?" William adds.
Santiago holds up his hands defensively. "I'm not saying you have to; I'm not trying to throw you together. I just want you both to be comfortable with each other while I'm gone, without worrying about how I'm going to react. You're both attractive, and you don't annoy each other."
"Yet," you mutter. You scrunch your face guiltily and glance over at William; he definitely heard your sarcasm. You give him an apologetic look and mouth the word "sorry" as Santi keeps talking.
William smiles slightly and tilts his fingers up, letting you know he didn't take offense.
"…want to know that you're safe, but don't want you to feel trapped if the sexual tension gets bad," Santiago continues.
You scoff. "What, you think we're going to go crazy and gnaw at our own limbs if we don't have sex while you're gone?" You force yourself to take a deep breath and stand up; if you don't put a pin in this, Santi will just keep talking until you say what he wants to hear. "Mi amor," you rest your hands on his shoulders, "it's very sweet of you to be so detailed in planning for us, but we're both adults. I have toys to keep myself satisfied, and I'm sure William remembers how to jerk off." You say the last part for shock value, and it does make Santi smile. "Thank you for giving us your blessing." You glance behind you to see William nod. "I guess this way, we won't need to worry about proving our innocence to you when you get back."
"Exactly," Santi says, rubbing his hands over your hips. "No worries, no lies. And instead of wasting time on innocence, when I get back, you can tell me how naughty you've been instead."