~Just a little background info~

Since the beginning, Baekhyun was the type to get along with everyone. His first friend in EXO was Park Chanyeol. They did everything together. They were even lucky enough to be roommates. They'd talk for hours at night before they went to sleep and sometimes they'd even sleep in the same bed. Do Kyungsoo was their squishy best friend. Though he doesn't have that close friend relationship of baekyeol, he's still a very important person to Chanyeol and Baekhyun. The breakfast duo would always love to tease squishy kyungsoo but they also protect the younger as well. These were the 3 musketeers of EXO.
Chanyeol being the happy virus of EXO, was friends with everyone else but usually to Kai and Sehun. They were his next closest friends if every the 3 musketeers got in an argument. The arguments usually don't last long because deep inside, they love having each other around. Chanyeol would usually apologize first, then Baekhyun. Most of the time, it's never Kyungsoo in the argument, he just always tries to make things better or gets angry at the two for being immature and won't talk to either until they make up. These 3 were inseparable.
Kyungsoo admitted to his friends he was gay and of course they accepted it. Baekhyun insists he's straight and Chanyeol didn't really mention his sexuality. Most of EXO turned out to be gay. Sehun accepted it when he met Luhan but Luhan had left EXO to pursue his dream in China. Same for Lay and Tao. The two fell in love with the same guy who also left to China but to pursue an acting career. They didn't let Kris get in the way of their friendship which was good and they still are really close friends. Xiumin was gay for Luhan but he gave up when HunHan was a thing. Suho, he's a mother to all of EXO and hasn't mentioned anything so he's a question mark. Kai never actually said his sexuality but he will mention if someone is attractive or looks good as does Chen. All in all, they are all really good friends.
For roommates, if they allowed 3 people per room, the 3 musketeers wouldn't hesitate to have a room together but sadly, it's only 2. The rooms were: Baekhyun with Chanyeol, kyungsoo with Kai, suho with lay, Chen with xiumin, and Sehun with Tao. Though separated from their squishy, the breakfast duo would have mini hang out sessions with kyungsoo in their room. By mini hang out sessions, it's really kyungsoo cleaning and forcing baekyeol to clean the messy room. In the end, it would be a fun bonding ish time. In kyungsoo and Kai's room, everything is always neat and tidy. Usually because kyungsoo spends more time in there than Kai.
Kyungsoo is most of the time, EXO's designated chef. He's also the one that usually takes care of members when their sick and the one that nurses someone if they got hurt. He's also the one that members usually don't wanna make angry. His nickname is Satansoo for a reason. Though he's names Satansoo, members continue to tease the squishy member and end up facing the wrath of Do Kyungsoo.
ChanBaekSoo is the closest friends in EXO. They bring life, laugh, and excitement into the group. They are Best Friends Forever.