A night of ball busting and orgasm denial

My girlfriend and I lately introduced ball busting in our relationship and it has taken things to a new level. I am talking about light ball busting, meaning slaps and mild squeezes. Nothing remotely similar as the punches or kicks that usually come to mind when you think about this type of play (were are both turned off by the extreme version of the kink).

At first she was reluctant because she is a gentle domme and didn't want to hurt me. But over time she has grown to really enjoy it! She loves how squirmsh, whiny and submissive I get when she slaps my balls, as I reach sub space much faster and deeper when she inflicts me pain. We both enjoy it so much that our sex has shifted to almost 100% me being dommed by her. In that regard, I want to share with you a little story that happened last night.

Last night we saw each other after a while (we are in a LTR). After that long we were eager of having sex, and that very day we sexted a lot (mainly her telling me all the things she wanted to do to me). When we were cuddling in bed after having dinner, she told me that tonight I was not allowed to cum and she was not going to play with my dick. However, she wanted me to give her a back massage, and then make out and slap my balls a bit before going to sleep. I gave her the back massage for over 15 minutes the best than I could and then she asked me to get in bed with her and we started kissing. It was so nice and confy to have her between my arms again, kissing lightly and caressing our bodies. I am not allowed to touch myself in the days prior to be with her, so I got hard super fast and was starting to feel desperate for the situation to scalate. At some point she slided her hand down my stomach and started lightly rubbing my dick and balls over my boxers. I was so eager for stimulation that I could not stop twitching and moaning softly. She told me to open my legs for her and she started slaping. Light and gentle but firm slaps directed to my balls, changing from one to the other, while the kissing grew more intense, she biting my lips and me moaning and shivering after every hit, looking at her in the eyes as she told me what I good boy I was for taking her spanks so well. The pain felt so good. I was rock hard underneath my boxer, getting the spot where the head of my hopeless dick was wet with precum. She notice it and upped the strength of her slaps, telling me what a dirty little pain slut I was for ruining my boxers just by getting my balls hit, and then made me thank her after every slap. At this point I was spirilling down into subspace, my world reduced to just taking the pain of every hit. After a while she let go of my balls, kissed me and told me to put my pijama trousers on again. I don't know if I missheard, was too groggy after her beating or maybe desperate for some actual stimulation on my aching dick. But the fact is, without even being aware, I started to remove my boxers instead of putting my trousers back on. She asked me what the hell I was doing, and then I realized and started pullung them back on again while apologizing to her. She stopped me and commanded me to remove my boxers completely. Since I dared to show my genitals to her without permission, while knowing that I was not allowed to cum that night neither she was going to play with my dick, she assumed that her beating had not been enough and I needed more. Before I was able to process what was coming to me she got on top of me to prevent me for closing my legs, and started slapping my now fully exposed balls way harder and faster than before. She even grabbed them and hold them in place while hitting them, so there was no place for them to scape. I could not stop shaking, moaning and twisting under her. The pain was still enjoyable, but it was getting pretty intense. I told her how sorry I was for misbehaving and begged her to slow down, but she was relentless, only stopping to gently caress my balls and shaft for a few seconds before resuming busting again, while telling me that I needed to be a good boy and take my punishment as long as she wished. After I don't know how long, she decided it was enough. I was trembling while puting my boxers and trousers again. The session had gone over 35 minutes and I had received no stimulation on my dick. Not even one sad stroke, just light rubbing of the shaft in the small breaks between her slaps. My dick was so hard it was getting painful, the head wet with precum, and my balls were sore and aching from the beating. We hugged and she told me since I had been such a good boy and took her beating so well, she was going to play with my dick a lot the next day. However, I was so horny and eager for more that I dared to beg her to touch me for a bit. She declined. I then begged her to let me at least eat hear out. She happily agreed, and I licked her pussy and fingered her, giving her two orgasms. We then cuddled together into bed, talking about how much we enjoyed the sex that night. Although I was still very horny, I quickly accepted her decision to deny me and genuinely thanked her for doing so. I love the submissive feeling I get when I ponder on the fact that our sex that night reduced to her getting eaten out up until two orgasms and me getting my balls spanked. I am so happy that she accepts my submissive side and enjoys domming me so much. God, I love her so much. I hope she takes it easy on my sore balls tomorrow!