I see myself in his eyes.
If he says, "You're beautiful!", then I feel like it might be true; maybe I do have a bit of beauty all my own.
When he seems to accept something I've said as reliable, even insightful - then I nod to myself as if I am those, even if only an eensy bit more than I had measured myself to be.
Sometimes I see that special look in his Husband Eyes, the one that says I'm desirable.
And that's enough to make me believe it.