Riodan and flirting... He doesn't have a lot of experience, especially in his canon, but he can do it. It's not so much like small witty remarks as it a big open statement of his appreciate of the...
Nev and flirting... This one's trickier. She really doesn't understand what flirting is or how it's done, but she does have crushes sometimes. That said she's she's my closest to a-sexual or a-romantic...