My partner introduced me into ballbusting

Hello, I posted this with RavenCry7 but my account was banned for spam unfairly. I wanted to repost it as I want to introduce myself in this subreddit. I would like to continue posting my life experiences as I have lots of them. I'm a girl, 24 years old and my partner introduced me to an incredible kink.

I was a really vanilla person. I like sex but had never been attracted to any type of kink. When I started with my current partner, we both began exploring BDSM together. He loved tying me up and playing with me. One day, about four years later, he told me about grabbing him by the balls as a way to turn things around. At first, I was nervous because I was worried about causing him pain.

The first time I grabbed him by the balls was on our couch. He was telling me some gossip but stopped just to annoy me. We were sitting comfortably and he was only wearing boxers. When he stopped talking, I grabbed his testicles tightly and asked him gently to continue. It felt like he was all mine; he couldn't even move. Since then, when we have sex, sometimes I grab him to dominate or slap his balls. I enjoy it more and more since then. I still worry about causing him pain but I love seeing hentai pictures of it and sometimes try it with him.