Grantaire watched him, smiling slightly as he spoke. He had always been fascinated when Enjolras spoke like this. He was... radiant, in those moments, and though Grantaire didn't share those beliefs, though he might not ever be able to, he liked watching someone who did.
And this time he got to listen to him as he held Enjolras' hand, and when he got particularly enthusiastic he squeezed Grantaire's hand and he felt a surge of happiness unlike anything that he'd felt before. He was grinning widely before long.