Lia gets jealous more often but Michael is worse when he gets jealous
Michael is the one who taught Lia how to drive. They snuck out once without Judd knowing to do it.
Lia loves to steal Michael's shirts and hoodies for sleep. Michael pretends to complain about his missing clothes, but he secretly likes watching her wear them.
Lia consults Michael's opinions for some outfits but doesn't listen to him if he doesn't agree with her.
Michael has helped Lia dye her hair before. It turned out worse than when she did it alone.
If Lia comes into his room and Michael is sleeping, she takes certain pleasure in waking him up in the loudest, most chaotic way possible
They both get into endless prank wars with each other that gets progressively worse with time and only stop when Judd makes them
When they can't sleep, Michael takes them out on a late night drive
They've done a fake proposal in public before just for fun
Lia fell asleep on Michael's shoulder once after a particularly long case and Michael didn't move her but when she woke up he teased her relentlessly for it.
Lia and Michael both share airpods (they made a collective playlist together for it) on many occasions such as flights or in the car
No words are spoken when Lia knocks on his door at 3:00 AM after a bad dream, even when they're off. Michael just lifts the blanket, moves over, and lets her crawl in next to him.
Lia is one of the few people who can successfully ragebait Michael and she exploits this fact all too often.
Lia often steals Michael's favorite cereal (even though she doesn't like it that much) just to annoy him
They sneak out to go clubbing together just the two of them (normally ends up with them making out after)
When Lia is too drunk and tired to walk in her heels, Michael piggybacks her the way home.
For Christmas, Lia specifically sends Michael a separate wish list from the others of the most expensive items she wants.
Michael and Lia once took a trip to Asia together (funded by Michael)
Lia had to train Michael on how to take good pictures for her
Michael secretly took a few pictures of Lia sleeping (that she doesn't know about) bc he thought she looks soft when she sleeps
They have a running game where they pick a target for the day—like Briggs—and turn it into a competition to see who can trigger the biggest meltdown. Michael started this game.