Hm, you might have made that point a time or two.

[How can he not help lighten her mood? This is an important topic, certain, but it doesn't need to be completely morose either.]

It's not all that's been on my mind, not entirely. I wished to spend time with you, of course, but even though you were happy to see me down on the planet, I could tell that you've been anxious about things as they stand.

What can I do to relieve that for you?