...and it's not about age...

I’ve been with my partner for almost twenty years now. We have a good life together, kids, house, the whole package. Nothing ever really changes... until two months ago when I started to notice something different in him. It wasn’t a huge change, but enough that one day he proposed we try out something new in our sex life, he wanted to be tied up and spanked while being fucked from behind. His words, not mine. I had fantasies of my own for sure... but this? He didn't want just light play, either, he said he needed me to really take control over him. So last night we tried it out... We went into the bedroom and I undressed him until he was bare. His body looked so much like it used to when we first got together, still muscular, still firm in all the right places. He laid on his stomach, face down, legs spread... and I took my time with him. I strapped a belt around his hips and pulled it tight, making sure to leave marks behind. Then I started spanking him, hard at first, his ass pinked up real quick. The sound of flesh meeting flesh echoed in the room as he moaned beneath me... I reached between his legs and found him already rock-hard and dripping wet. With a condom on, I slid inside of him slowly... it had been years since I’d done this kind of thing to him. He was tight and hot around my cock, gripping me like a vice. His hips started moving back against mine, and soon we were both lost in the rhythm. He kept begging for more, crying out louder with each thrust, I could feel his muscles flexing under my grip... ...and when I came inside of him, he was still jerking around beneath me, milking my cock dry. We stayed that way for a long while after it ended, me holding on to the belt, him breathing heavily and sweating in the sheets. It wasn’t who either of us had expected we’d be at this stage of our lives... but somehow, it just felt right.