I'm pretty sure that My Chemical Romance is the only kind of romance Pubert is familiar with.

[Not that Ango wasn't listening to emo bands too, back in his college days. To be honest, he hated idol pop until he became an Ai stan... but he's not about to let Ruby find out that only started listening to her music a few months ago. At least he's actually talked to Ai instead of only connecting with her through songs! And he's kept her secret boyfriend a secret, just like he promised!]

We totally have a connection! She even trusts me with personal secrets, you know.