Cassian easily stares right back, pulling faces at her. The silliness abruptly slips into something softer when Jyn speaks up and it feels like the happiness burrowing in his chest right now is undeserved.

He also picks up on the silent part, and his chest aches a little bit for Jyn too. He looks from Rey to Jyn with little change in his expression, because he's not fully aware of how he looks at Rey. It's not always so different from how he catches himself looking at Jyn sometimes. He's so good with words usually, but he finds himself at a loss in this moment.

Until Rey interrupts, naturally. He ducks his head to the side, smiling and collecting himself, before he turns back to wife and daughter. "She definitely doesn't understand what that means."