For Kanae I think it was probably when she tried making traditional Sharlayan food for Shtola: she had to learn about it from Krile, G'raha and Tataru, and tried her hardest to make it taste good, but even the world's most skilled culinarian can only make archon loaf taste palatable. Cooking is Kanae's main love language so Shtola appreciated it a lot but then after a good laugh she gets asked to make her favorite Doman food instead.

For the first Valentione's Day after everyone comes back from the First, Urianger and Thancred get a very large bouquet of flowers each sent to them at the Rising Stones-- from an "anonymous" benefactor. Neither of them say anything to each other or even bother W'htal about it but they find it really sweet.