I finally couldn't repress my fantasy for any longer. One early afternoon, when the kids were in school, we closed the bedroom curtains and started to have sex. I had her on her back, and I pulled down her tight fitting pink pants. She had on sheer pink panties, not a thong, but the normal kind. I loved her in these, since I could see her ass even as they covered it. I had my fingers on her, rubbing her outside of her panties. I looked up and saw her eyes closed, letting me have my way with her.
"Turn over," I said, in a normal voice. She did. Just like that, for the first time in our marriage, I started to spank her ass. She just laid there, perfectly quiet. I went easy at first, with "good girl" spankings, not even leaving a mark. Then, I got harder, really spanking the cheeks of her ass. She still didn't move or complain. I didn't make her count the spanks like I did with my ex-girlfiend, or even make any comments about what I was doing. I couldn't risk her getting freaked out and calling it over.
But I was so turned on by this, almost coming just by seeing my hand marks on her ass, I got to a point where I had to take it further. "Pull your panties down for me," I said, again in a normal voice. She pulled them down, then started to move her legs up, to completely take them off. I grabbed her arms kind of hard, letting her know that I wanted them down, but not off. For some reason it seemed hotter that way. Seeing her this submissive, I then told her, "lift your ass up in the air." Again she did what I'd asked.
After a while, I wanted to be inside her. The way she moved her hips when I stopped the spanks, I think she wanted that too. I reached between her legs to feel her with my fingers, and she was incredibly wet. I had only barely touched her, and was reaching further up between her legs, when she came on my fingers. She's always pretty quiet when having an orgasm, almost like she wants to hide her excitement, but this time she really yelled out uncontrollably. I then took her from behind, coming really fast.
As hot as all of this was, a fantasy come true that I had to write up here if only to keep reliving it for myself, her reaction afterwards maybe became the hottest moment of all for me. She got dressed without speaking or even making eye contact, looking a little ashamed, as if she had just got punished. I'm sure her shyness kicked in now, and she was embarrassed for having been spanked. More than that, though, I think she was feeling some shame for having enjoyed it so much. We haven't spoken about that night ever since, and of course it keeps me wanting to spank her again. She must feel the same way, though I know she'll never admit it.