Well, we've learned Ro's type is Jinu and people with pink hair who can bench press him. (Abby and Mira)
I propose an idea for you. The boys are working a tour that Mira just so happens to be consulting on. Once the show is done, Ro, Abby, and Mira go out to a club to drink, dance, and loosen up after a night of work. Abby and Mira, the little shits that they are, proceed to purposefully make Ro deliriously horny and give him bisexual panic.
YOU KNOW i have had a similar scenario in my back pocket for A WHILE (since this sketch) abby and mira doing something (making out, etc), and romance suffers the consequences (losing his god damned mind). either something voyeuristic (a/m don't know they're being watched) or straight up ruthless teasing (ro not realizing a/m KNOWS they're being watched or a/m just doing it on purpose right in front of him like sadists.)
perhaps this is a sign i need to add it to my fic queue 🤔 (i am in need of more abby centric fics to write anyway)