Dunno what it is but Isabeau’s "we can practice!" thing to Siffrin is just. Urbgngngifh. That and him being totally fine with Siffrin needing time to figure out how they feel, and knowing that Siffrin loves them deeply, even if it's not romantic.
IDKKK I think it’s the fact that he's, just, so willing, and even excited, to go at Siffrin's pace…?
And it's made so much more impactful by the fact that he’s not "perfect" as a love interest, either, I think. A lot of queer stories write love interests as like… Always Perfectly Healthy And Communicative! It'd be a lot less impactful if Isabeau didn't get so jealous to the point he snaps at Mirabelle, if he didn't wrongly assume things about Siffrin and not ask for clarification (touching), if he didn't have a Whole Entire Thing about not being able to confess to Siffrin.
Idk. I like it. I like that he has romantic vices, and I like that being pushy or impatient is not one of them. I like that he makes a point to make it so Siffrin can take the lead, try certain actions to see how they feel, and figure out how his feelings for Isabeau. I think it makes Isabeau a really good match for Siffrin. Someone more demanding would probably active Siffrin’s people-pleaser, hide-how-you-really-feel-for-their-sake tendencies.
This was originally supposed to be like 3 sentences max oops