[MF] The message I sent to my sleeping wife that resulted in her waking me with sex after she read it

It’s late, after 1am.
You have not long come back to bed; that’s what woke me. You’ve tossed and turned a bit, and you’re facing me, resting your hand on my bicep. I know you’ve been sleeping poorly recently, so I start stroking your skin because that’s helped to settle you before.

I start with your arm that’s holding me, moving the pads of my fingers lightly across your skin, and you make a pleasant noise; something halfway between a sigh and a moan.
After a short while you roll into your back. I start stroking your other arm, because it’s closer and more accessible. When I run my fingertips over your inner elbow you make the noise again. That noise stirs something in me; I love it, and it makes me want you. But that’s not what I’m trying to do – I just want to help you relax. I stop stroking your arm and move my hand – my fingers – to your stomach; you’ve mentioned before that my gentle touch here has helped you get to sleep.