What's Sunny's relationship with Blue like?
OKAY SO... this is an interesting question because I DO plan to touch on Sunny's relationship with the rest of the crew later on, specifically in a comic about their involvement with the show's plot. I'm currently just working on the outline and doing "first drafts" of some segments, and so far, Blue happens to be one of the characters I haven't been able to fit in.
To answer your question though, they are on pretty good terms! They're friends, but not to the point of being all up in each other's personal business. Think "someone I know from work that I would occasionally grab some coffee with during breaks".
Sunny wouldn't deny that Blue is very attractive, but they probably see the charm as something to learn from, rather than something that draws them in. Due to the career overlap, I imagine they'd chat and trade tips about getting other crewmates to cooperate with them — You know, the sort of thing you see Blue pull off in EP2. Although they might also both very politely try to leave out identifying details of their past cases LOL.
I like to think that Sunny would sometimes "invite" some of their plushies and puppets as additional guests to their hangouts. I don't really see the doc as the type to be judgmental over that sort of thing, even if they don't necessarily see it the same way Sunny does!
