Forced to cum

i'm still blown away when i think back to last night...
Lady Helena had me tied to the bed and played with the e-stim device. She had forbidden me to cum. We had agreed on a penalty, but knowing how intense the e-stim feels after i came would have been incentive enough.
She didn't waste any time and began to ramp up the power. I was soon squirming, my cock wasn't used to the stimulation, yet. The intense stimulation and Lady Helena describing how She would tease and use me had me quickly in a conflict. I knew i should try to relax and hold back, but i also knew that She wanted me close to the edge, so i went back and forth between relaxing and focusing on the stimulation.
Lady Helena kept ramping up the signal. I was fighting against the restraints that held me spread-eagle and i loved to feel them holding me tight. Finally i had to beg Her to turn the power down. She gave me a short break, but then started to turn it up again. And again, She didn't give me much time to enjoy the lower signals, but went on until the sensations started to get painful.
We did several of this cycles and i thought that i wouldn't be able to cum with the over-stimulation. But at one point, i felt the edge approaching and there was nothing i could do. The signal was very strong now and i knew that this would be no nice orgasm. I told Lady Helena that i was about to cum and a moment later, it happened. Well, somehow...
The strong stimulation overrode all the feelings and didn't let me relax my muscles after the first squirt. I was like i was stuck at that point, before the mental pleasure could start. The electricity was now feeling even stronger. I started to beg Her to turn the power down, but She let me struggle for a while before She did.
I was feeling exhausted, confused and a sex-headache had started to set in. I was looking forward to be freed and take a shower. Then i felt the electricity getting stronger again. It felt so intense now, that i started to beg almost immediately. Lady Helena ramped it up further, She enjoyed my moans and screams.
She gave in finally, but only to start a 3rd cycle after only a short break. i almost reached the edge again this time and i was very glad when She stopped. Being forced to cum again with the signal so high would have been excruciating.

Finally, She turned the e-stim off and released me from the restraints. I was sweaty and exhausted and unable to think or talk straight. i needed almost 2 hours to come down before i was able to fall into a peaceful sleep... thank You, Commander!