Well...
Kelvin is serious and is old enough to look past looks- he doesn't see anything romantic about the situation.
Carver is a Paladin sworn to honor, and likely would see that as taking advantage of her.
Furnace is innocent and... well... innocent.
Same goes for Des.
Separ is innocent as well, and seems bashful too. (Not to mention he has his eye on Suki.)
Vis is now a father figure... I dunno... something like that. No reason for him not to flirt really... other than the hole in his face that he is self conscious of...

Arastoph likely would observe that as neither Suki nor Alula are rich, neither are good prospective mates.