I don't know if it's green or blue at this point but I'm going with blue

There's been one time where either Red or Blue has said "Yas queen yas!" In text form when drunk, but I just don't who which one.

Blue has taken up the hobby of cooking because honestly life gets pretty boring when your childhood crush is stuck on top of a mountain and refuses to come down from it, and you have to run a gym too.

Red once yeeted his drink at Blue when he accidentally scared him as a kid, they joke about it too this day. Red sometimes threatens Blue to yeet his drink at him again.

Blue was touched starved after Red left to go to Mountain Silver and his sister and mom were barely in contact because they always seemed to call at the wrong time, needless to say, once Red came down from that damn mountain and ended up giving him a hug, dude started crying because oh GOD he missed being hugged so much.

Red can talk in the manga(which I DO have, the first one so I know this) and is mute in the games, so he is a selective mute.

Blue has climbed a tree once, he's like that guy from that once vine; the thing was, he wasn't a child either when he did, he did it on a dare. This one:

https://youtu.be/BKInDainD5M

Red watched his boyfriend and facepalmed, how did he get so lucky yet so unfortunate at the same time. The branch he was holding on broke but so did his heart when he saw him falling off that branch. Hugs and kisses were the results of that, along with a couple of bandaids and ice for the bruises. And also a concerned Leaf.

By the time they are at Alola their on their honeymoon, turn out Sun knows Red for being the one who stayed on a mountain for a couple of years and has no idea who Blue is, yet Moon knows who Blue is and no idea Red is, god those two children were confusion on how they knew one and not the other.