It is definitely not a real threat considering what follows - an actual, real life sappy confession that she wants to stay with him forever - but Cassian always hoards Jyn's sentimentality for himself.

Instead of responding with any words, he kisses her first. It's soft but enthusiastic anyway.

"I love you too, and I think you just talked yourself into it." Talking is good! Sometimes. He smiles at her and brushes some of the hair from her face. "To start, my mama is not going to hate you."

Carina already adores Jyn. His mother has also realized Jyn is like a skittish cat, so she has been slower with affection.

"Maybe this is our right time. No one else is allowed to decide but us anyway. You are it for me, Jyn. I feel like we can do anything too, as long as we are together. You are my family. There's no reason we cannot... make it bigger." His smile turns a little quieter. "There is no one else I would want to have a child with."