Just Experimenting?

I met someone new tonight and decided to experiment with CNC roleplay. We agreed on all the boundaries beforehand and made sure everything was consensual as we went. She told me to treat her like a sub, and I got rough, restraining her hands and dominating her verbally while fucking her from behind. Afterwards, she said it was intense but good for both of us. Is this something that's common in open relationships or just weird?