My partner's new plaything is my former lover

My partner and I have a thing for older women, and we're not shy about it. When we got our hands on a sex machine, we knew exactly who we wanted to try it out on - my ex! She's a hot MILF with a killer body and she's always up for some fun. We set up the machine and invited her over. She was a bit surprised at first, but excited too. She stripped down and let us strap the toy to her pussy. It was intense watching her ride it, her body writhing in pleasure. We joined in, fucking her hard while she was getting pounded by the machine. It was a wild ride, and we all came together. Afterward, she said she'd never had sex like that before. Now she's considering joining us permanently.