There are things that made Jean cry easier than others. Mostly sappy things that Mikasa might say or various Marco related things, but also if someone else was crying in his presence. He's more of a crier than he likes to admit. But right now he doesn't mind the tears, at least.

"Of course you're enough, idiot. You'll always be enough."

Since Reiner hadn't done it yet, Jean makes the first move for the hug, wrapping his arms around him and pulling him in.