"It's good," he insists, though privately, he's wondered if it's supposed to be spicy, or if he's developed an alien allergy. Making Scully taste it, he realizes just now, might clear that up.

Outside it's already warm, and it's a short walk over to the coffee shop. And when they're waiting for their drinks, he asks, "What were you going to do today? I don't want to keep you."

Yes, he does. But at the same time - she's got a job, friends, who knows what else. At some point, they can't be joined at the hip any longer.