He nods at the sign. "I'll keep an eye on you, all right?" Then, after a moment, "Or you could come with me and we could both spend time with my brother?"

He assumes she might have wanted time alone and that's why she brought it up, but he also doesn't like the idea of leaving her alone if there are shifty templars about. He's too close to the mages of his Clan to feel entirely comfortable with that.