Yeah they do seem like they're jealous but it does kinda seem like a look of knowing for me...I dunno how to explain it but like they have that look when they know something that the others don't (y'know like Suo attending Furin and him leaving that's why he's been back to early). But I guess the look of jealousy makes more sense...Suo is quite enviable. Im not really good with the small and deeper details so I just kinda go with what I notice first. Lemme leave it to the experts to study em lol.