That Time I Let My Husband Hook Up with a Customer

I'm going to start off by saying I love my husband. We've been together for seven years and married for five, but over the past year or so, our sex life has become increasingly dull. He's been bringing home porn magazines that we both enjoy looking through together, but still, something was missing. So when a new customer came into the café last month, my husband decided to spice things up by setting me up with her. This woman, let’s call her Sarah, is around thirty-five and she comes in almost every day for coffee. My husband had been making subtle hints about how beautiful she was to me, but I never thought anything of it until one day he leaned over and whispered that we were going to play a game where I flirted with her and then came home to him. At first, I was reluctant. It's not every day you're asked to do something so out of the ordinary. But as the days went on, my husband started leaving subtle clues around the house: a note in his handwriting, a text message reminding me about her order time at the café. He made it clear that he wanted this. I decided to go for it and see where it would take us. So there I was, pouring Sarah her usual coffee and making sure our eyes met as she picked up her cup each day. It wasn't hard; we both seemed to know what was going on without saying a word. And one afternoon, she invited me to meet her outside the café after hours for some drinks. We ended up spending that night together at her place, and while it felt right in the moment, I couldn’t help but think about my husband back home. The next morning, we returned to our separate lives but with a new understanding between us all. My husband was happy afterwards, and so was I, there’s something about breaking the norm that made everything more exciting again. But is this normal? Am I just being paranoid when I think other people might find it odd? Have any of you ever tried something like this in your relationship or known someone who has?