i think laios cooking for his girls would be a big one. time and time again we see him take on a very caring role towards them and i think one of the only ( non clumsy ) way he has to do that would be through food, even as far as feeding them. falin is always the first one to accept it because she has more of a history with that than marcille does, and while marcille comes off as not liking it, she always asks for more.

i also think baths, marcille and falin have been taking care of each other with baths since their magic school days and i think they’d welcome laios in those intimate moments at first, granted it’s not new for laios and falin but the way falin spends more time caressing potentially sore muscles is. and laios is more than thrilled about it.

i always thought of laios being the first one to initiate any more than fraternal contact between him and falin, and to have her take bigger steps always has his heart filling with pride.

also magic studies, we know falin and marcille both have tried to teach laios magic, i think laios would have an easier time when it’s just the three of them, its quiet and full of small touches and kisses whenever laios gets something right.