umm yes to all of this! rio is way too familiar with depression and ~angst~ and hating the world, makin' that path to the dark side look pretty sweet. they could've totes worked together and seeing as rio is pretty wild and flirty herself, maybe they slept together after one too many drinks at the cantina? she doesn't wear her heart on her sleeve (she's almost convinced she doesn't have one) and would be nonchalant about the whole thing ¯\_(ツ)_/¯