It's the question he least wanted asked and the one most obvious in wait. Jyn is very clearly uncomfortable but Cassian can do little to mitigate that right now.

Taia smiles gently, like she too wants to reassure. "A little more I'm afraid, but it's not like this one let it get very serious. Friends is fairly apt in the end." She looks back to Cassian and her expression looks more oops. "Sorry, I should have left that to you."

He sighs again, barely perceptible and drums his fingers on Jyn's back. That's the nicest way Taia could have said basically friends with benefits, because it isn't like Cassian ever allowed for a lot of romance. Casual dating? Maybe? He didn't love Taia. Why is this happening, he's married.

Fake married, but he still wants Jyn to be fine. "It was a couple years ago, before I left Coruscant."