Confession from Grad School Dropout Married Woman

I met this guy online during my grad school days. We clicked instantly over our shared love for vintage literature and obscure films. Soon enough, he became more than just a friend, we were secretly exploring each other's bodies in chat rooms and through video calls. It was exhilarating to live a double life like that, having something passionate and intense outside of my everyday routines. Fast forward a few years, I’m now married with kids, but this online connection still exists. We haven’t met face-to-face since before my wedding day, but we’ve continued our intimate connection through the digital world. Last night, it escalated to something more daring, we role-played scenarios that were purely erotic and pushed boundaries. Is this normal for married people? I’m scared of what might happen if things go too far with someone who isn’t my husband. What should I do moving forward?