How they first met: The two of them first met as new hires to a now-defunct Hoenn villainous team called Team Ventus, who wanted to try and summon Rayquaza in a plan to take over Hoenn. Maxie was hired as a scientist and Archie was more of a general grunt. The two became quite good friends while working for Team Ventus and both agreed to leave the team when their plans started to go under. It was only afterwards that the two began disagreeing on their next course of action and became rivals.
Where their first date was: While they didn’t consider it a date at the time, Maxie invited Archie to accompany him and Kiran to an open-air market in Lilycove in the hopes of continuing to repair their friendship. There was definite romantic tension to the whole thing though, and looking back the two consider it their first date.
When they had their first kiss: The two were just hanging out by themselves in the old Aqua base in Lilycove (where the two teams had moved in together) when Archie leaned in to kiss Maxie. Maxie was initially surprised, but he certainly didn’t protest. Neither of them had outright admitted romantic feelings up to that point, so this kiss (which soon turned into quite a makeout session) marked the beginning of their ‘official’ romance. The rest of the two teams (go by Team Aether now) thought it was about time their bosses just got together already.
Who cooks: Maxie usually cooks! Archie is good at the basics, but most of his recipes require pre-prepared components. Maxie is quite good at cooking and picks up new recipes well. Kiran likes both their cooking though and would always insist Archie cook when she wanted something a bit unhealthier for dinner.
Who proposed: It was actually Maxie who ‘proposed’ but it was incredibly informal. He and Archie had been living together and dating for a while, and one afternoon while Maxie was going over expenses for Team Aether, he made an off handed comment about how things would be easier if he and Archie got married – in terms of tax benefits and guardianship of Kiran and the like. Archie just casually responded back, “Well, why don’t we?” and that was that. 
The dominate one: Archie for certain, though when Maxie gets a new idea in his head, he’ll be the one to take control to try it out.
Their favorite pastime together: While Archie loves big group activities with all of Team Aether, Maxie prefers quieter pastimes. As such, their favorite thing to do together is usually going hiking or to some secluded nature spot since, despite their differences, they both love spending time outdoors.
Who kissed who first: Archie kissed Maxie!
Who is the flirt: Archie for certain. Maxie is a terrible flirt.
Who is the romantic: Also Archie. He knows Maxie loves him, but Maxie’s idea of romance is unconventional at best. Archie is more of the ‘candles and rose petals’ type of romantic, though he can go a bit overboard at times.
Who wakes up first: Maxie usually, though Archie somehow never fails to wake up soon after Maxie does. He likes to joke that Maxie is his alarm clock.
Who comforts who the most: They both comfort each other about equally, each with their own methods to cheer the other up.
The cuddler: Archie! He’s pretty big on physical affection, though Maxie will cuddle up to him if they’re near by. Not quite cuddling, but more like just sitting very close so they’re pressed up together.
The big spoon: Archie, usually.