I must know, what is this Amber/Mark/Rex you speak of? I am listening very intently
OOOO BET...little infodump under the cut (continuation of this post kinda)
i imagine these three being HELLA domestic and corny 500% of the time. Mark and Amber love more openly and show PDA like its second nature, but Rex? he's a bit weird in public when it comes to softer displays like hand holding and non-make out kisses bc he still wants too at least look somewhat cool. in private though? he lets his guard down much more frequently as time passes and is always the first to initiate cuddle time.
when the boys workout, Amber gladly watches without any ounce of shame ( ͡° ͜ʖ ͡°).
Mark always flies the both of them to work before even starting patrol, needing to make sure his partners are safe and taken care of.
Slightly off-topic, but Indomitable is more "selfish" (using that term loosely) in this au and always puts his family first over strangers. the world could be burning and he'd need to make sure his partner(s) / mom / brother were taken care of before even brainstorming a way to get rid of whatever the threat is; years of feeling like an afterthought by his own father made Mark extra cautious to never make his family feel like that.
Amber loves fixing both of the boys' hairs, more so Mark's since he rarely runs a brush through that thing unless it's wet. She loves trying out different hairstyles on him which Mark loves since having his hair played with has always been grounding for him.
It's a constant battle between Amber and Rex for how their bedroom is decorated; Amber's more retro and minimalist, where Rex is more flashy and loud. Mark couldn't care less - just as long as they dont touch his Seance Dog collection.
Dates are rarely local and each gets a turn to pick out a new country to visit; Mark happily flies them wherever.
