Heya, anon! Yeah, I really do love both Kalosshipping and Boutiqueshipping, but I don’t think I’d want there to be any drama or angst caused by either Calem or Shauna getting with Serena, mostly just because of the way I ship them / have them all characterized them in my head. I see Boutiqueshipping as mostly a one-sided crush on Serena’s part, with her getting flustered every time Shauna says or does anything cute (so basically all the time), and Shauna being pretty oblivious to Serena’s awkwardness. To be honest, I can see Calem being a little angsty if the girls were to get together (just based on how we’ve seen him react in-game), but I also can’t see him being overtly bitter or whiny about it; he’s definitely become a more gracious person than that over the course of his journey.
Anyway, TL;DR, I’d like to think there wouldn’t be any major drama if either ship were to hypothetically become canon. <3 I love them both, and enjoy them for different reasons— I think both pairings are capable of coexisting peacefully.
More headcanons from my personal blog.