to love without any agony.

Simeon introduced Barbatos to the wonders of Plushies since it's stated that Barbatos did not have a childhood or was a child at any point. He didn't really see the appeal but keeps only a stuffed bear that he a message from Simeon recorded inside of it.

Barbatos work ethic diminishes when Simeon goes home to the Celestial Realm. Only Diavolo and Solomon ever notice, it goes unobserved by the brothers and other palace staff.

Simeon has snuck out of Heaven to see Barbatos. Micheal pretends he doesn't notice, in fact he is blind in his right eye and 40% blind in his left (iykyk). Raphael also notices the sneaking but thinks it's for Barbatos' cake, which it is but not the kind Raphael is thinking of.

Barbatos greatly disapproves of people licking the spoon/spatula while cooking but doesn't seem to care when Simeon does it, in fact Barbatos has another thing he'd like Simeon to lick.

Simeon takes a lot of naps in Barbatos room once he got it all decorated.

Barbatos has severe cuteness aggression because he has only experienced love as an observer of others affections, not as someone feeling it. Several realities have been destroyed and put back together because he'd rather do that than hurt Simeon with the feelings he's overcome with.

Barbatos has called Luke Son more than once and it makes Simeon so happy. Everyone is a sister/brother in the celestial realm so this is like Simeon's own personal family that he gets for himself the way the brothers had their own little group even before the fall.

Simeon started giving Barbatos a bedtime kiss every night. Barbatos was super sulky the one time Simeon forgot. Only Simeon, Solomon, and Diavolo noticed this of course since the man has a mask of steel but the sulkiness was bad enough that Solomon abandoned his original annoy Barbs that day.

Simeon once took them to do the Awkward JC Penny photoshoot at Solomon's recommendation. Simeon keeps some of the photos up on his fridge.

Simeon regularly gives Barbatos massages which forces the butler to relax.

Simeon is still so confused as to how Barbatos is a greed demon yet had such an empty room before came and forced Barbatos to get a mattress. Seriously, where is his mattress?