Absolutely I do!

Green/Red

• Green is the one who managed to get Red to come down from Mt. Silver by somehow beating him in a pokémon battle. Red was so stunned by his loss he just kind of followed Green back to civilization. This is the only time Green has ever beaten Red in a battle to this day.
• Roy was already born when the couple visit Alola in the SuMo games and was about 10 or so months old (give or take.) And yes, they brought Roy with them! Leaf and Yellow (along with baby Amaryllis) also went to Alola and ended up having to babysit Roy a lot because of Green and Red’s frequent trips to the Battle Tree, whoops.
• Red is technically unemployed, as he doesn’t really want to officially apply to be a professional pokémon trainer due to annoying bureaucracy. He still regularly seeks out strong people to battle with though, so his skills never go rusty and also because he thinks “stay at home dad” sounds way more boring than “Multiple Hall-of-Famer Professional Pokémon Trainer.”
• They are a very sappy couple who like to show off how in love they are, though most of that’s Green being smug (”Look at me and my husband!”) while Red just goes along with it.
• Green likes to think he’s a super cool dad who their sons will see as a role model but more often than not they go to Red for advice instead. Whenever this happens Green ends up pouting and needs to be comforted by his husband.

Barry/Lucas

• A couple where people sometimes wonder how they got together due to how different they are. Definitely a very wholesome case of opposites attract.
• Since Lucas was Rowan’s assistant, the two didn’t really meet until they were around 13 and didn’t interact much until after the events of DPPt. They met by chance at the Battle Frontier and when Lucas mentioned he wanted to improve his skills as a trainer Barry took him under his wing as a “Professional Battle Frontier Tour Guide.” Their romance blossomed fairly quickly, though Barry was pretty oblivious to his feelings while Lucas was realizing that subtle flirting wasn’t going to cut it in this case.
• Dawn officiated their wedding and got trained to do so especially for her childhood best friend.
• By the fankid era, Barry is a Frontier Brain like his father before him and Lucas has taken over from his mentor Rowan as Sinnoh’s regional professor, though he still has trouble getting used to being called Professor Hawthorn!
• While they only planned on having one child, mainly due to how much of a handful Gavin was, they end up adopting Balthazar by chance due to some unexpected circumstances. Namely, Barry helps Dawn (who is Sinnoh Champion) take down a Cult of Giratina after they kidnap Dawn’s daughter, Tanith. While there, they find a boy who was raised in the cult to be a sacrifice and now has nowhere to go. The kid got attached to Barry  so one thing leads to another and he and Lucas end up with another son (Barry claims that Balthazar being blond and having a long name like him was a Sign that he was meant to be part of their family from the start.)

Nate/Hugh

• Though Nate wasn’t the BW2 protag, he and Hugh were still childhood friends as he and Rosa are twins. They had quite a bit of romantic tension between them throughout middleschool, leading Rosa to urge them to try dating after getting fed up by hearing both her brother and best friend worry about the other’s feelings to her.
• By the time the trio leave on their journey at 15, Nate and Hugh had been dating for about a year and a half.
• Once it became clear that Team Plasma had returned, the two teamed up to fight them whenever they could, Nate mostly being worried about Hugh getting too angry.
• Things reach a new level when, towards the end of their journey and when it’s looking like the final showdown with Plasma is approaching, Nate finds out he’s unexpectedly pregnant. While Nate himself is nervous due to his young age, he’s also excited and all the more motivated to defeat Plasma for the sake of his and Hugh’s child. Hugh, on the other hand, is incredibly nervous that Nate and the baby might get hurt now and ends up being rather overprotective of his boyfriend. This causes a bit of friction, but ultimately they’re able to work things out (with Rosa smoothing things over as usual whenever the two squabble.)
• Glenn is born the summer after Ghetsis is finally defeated and Hugh and Nate stay in Aspertia for his first year or so, getting help from their parents and doing their best to raise him. At that, the two start looking for jobs so they can support their family, agreeing that whoever finds one first will take it, while the other will stay home to take care of Glenn. Hugh ends up getting unexpectedly scouted by Interpol, leading the family to move to Castelia, where they get married soon after.
• Eventually, after Hugh gets promoted when Glenn is about 4, the family move to Opelucid to be closer to the League, which becomes their permanent home. When Glenn is about 6, they end up adopted their second child, Mindy, after her mother, Yancy, was looking for someone to adopt after she became unexpectedly pregnant. Glenn and Mindy are both handfuls but their parents love them (even if they hate each other lol)