Keith and Pidge started dating 2 months before the Korbros mission (keith asked for Matt’s permission not Sam’s) and they just choose to not tell people about it.
They never hid that fact that they were dating, if they were asked they’ll be honest but they never cared to let people they weren’t close to know so there a lot of misconceptions about them.
Colleen know by that’s because Keith also asked her for permission to ask pidge out (Colleen scares him even though she adores keith) .
How long do you like it take for Sam, BOM and the rest of Voltron to realize that they’re dating?
(if I am following the timeline properly then they should have been dating for at least 2 years before Voltron formed)
-🌙🍃 (my brain rot is getting to me)
First off, yes. Colleen definitely scares him. She probably scares anyone and everyone. Except Sanda. Sanda might be used to her. But that's probably another thought for another time.
And somewhat her daughter. Pidge has slight fear, but not enough to keep her from standing up to her own mother.
As for Sam? Honestly, he probably notices very quickly. But he doesn't say anything because "Well, if my kid wants to bring it up, she will. And Keith's a good kid, this is fine."
He probably notices from a very tiny obscure detail about Pidge sharing or giving something to Keith, something nobody else really knows since they don't know her THAT well.
It's gonna take the Blade of Marmora much longer. They don't know quite as much about Earthling courtship and relationships. And Pidge and Keith aren't really diabetes inducing sweet affectionate with each other. They're more casual and it can even be seen as friendly as it seems similar with their affection with others on the team.
ESPECIALLY if kissing on the cheeks and hugs are normal. Because honestly? I can see kissing the cheeks being normal with friends or partners, especially with happy moments. Hunk gets the most kisses on the cheek because of his good cooking that makes them miss home just a smidgen less.
So the BoM struggles to notice.
It might take until Antok or Regris get fed up not knowing for certain so they ask.
Antok: KEITH!
Keith: What? What'd I do?!
Lance: Oooh! Tailed uncle's gonna scold you!
Keith: Oh shut it.
Antok: Are you and the green paladin a couple?
Keith: Oh. Yeah. We are. For the past year or two by now, I think. Pidge, how long?
Pidge: Around a year and a half, maybe more, I think. Killbot Phantasm 25 was already out.
Keith: Thanks.
Lance, smirking and amused: Of course you nerds base it on when a video game came out.
The timeline is iffy for how long it would be. Because while it says "one year later", we don't know the exact time between the Kerberos mission failure and Shiro crashing and the team raiding Area 51 to kidnap save his rear. And we don't know exactly how long it took for the team to get to Kerberos.
Pidge points out in the first episode that it takes months to get out there and in her flashback while Sendak took over the castle-ship (Tears of the Balmera) Sam points out it'd be two months of eating freeze-dried peas. I feel like they'd be eating that longer, but that's beside the point.
It might be less than two years of dating for them.