He keeps quiet

I followed her into the bedroom. "You go back to sleep. I'm wiped out too. I'll join you in a second."

I undressed and got under the covers.  I watched her undress, piece by piece.  She unzipped her skirt, and stepped out of it.  As she straightened it neatly and hung it back in her closet, she hummed a little tune to herself.  She may have been wiped out, but there was a definite bounce in her movements.  She hung up her blouse, and threw her bra into a laundry pile.  As I mentioned, she somehow had already unhooked it.  

I looked at her.  Like me, she was older than when we first met. (Surprise!) But at that moment, in that light, she was more attractive than she'd ever been.  Her breasts sat high on her ribs, her nipples just a bit taut, from the cool night air, I guessed.  The half light in the bedroom caused her silouette to glow at the edges.

After she took off her slip, she stood in her garters and thigh high stockings.  She wore her garters?  Her ass, her -- 

 Just then the phone rang.  Cathy answered it quickly.  "Hello, " and she laughed. "What are you doing?  Yes, me too."

 She wandered briefly into the hall, speaking quietly.  I couldn't hear the rest of her conversation.

  "Who was that, " I asked, when she returned.