I just have this massive headcanon of Enjolras falling in love with Grantaire during a Karaoke night.
R is singing “What’s up” from the 4 non Blondes and he sees Enjolras whispering the song under his breath and when he begins to sing the lines “and I try, oh my god do I try I try all the time, in this institution” he approaches to Enjolras and then he sings the next part right in front of his face
And I pray, oh my god do I pray
I pray every single day
and then he puts the microphone right in front of Enjolras’ mouth and the blond actually screams “For a revolution!” and Grantaire is grinning like a fool and there’s a lot of eye contact and little smiles while R keeps singing and Enjolras cheeks might be a little rosy but no one says a thing.