Secret Playtime with My Trainer

So today I was out for my usual jog and running into Alex - he's a personal trainer, you know the type? Always so fit and full of energy. We talked for a bit, catching up, and then out of nowhere, we started this thing where he calls me 'sweetheart' and acts like an older brother figure to me. It was so weird but kind of thrilling! I mean, it's not like either of us is actually that age gap or anything, it's just... roleplay? Anyway, so later that day, I'm back at his place for a training session, and he pulls this cute little outfit out for me to wear. T-shirt that's too small, shorts that barely cover my legs - something like that. And he starts teasing me with these nicknames and acting all protective and strict, but in this playful way. It was so unexpected! We didn't do anything super crazy or explicit, if you get what I mean... we mostly just teased each other and acted out the roles a bit more seriously than usual. It felt naughty though, like we were stepping into something forbidden even if it's all consensual and adult. It's made me wonder about trying some little-space stuff with him again sometime - but also scared me a bit because it feels so different from what I'm used to. Anyway, just needed to get this off my chest. Not looking for advice or anything, just felt good to write it down.