A story from Saturday

Let me Tell you what happend to me last saturday.
My gf (25) lets call her Sarah a very tall women with big E sized boobs, brown hair and Brown eyes and i (28) are both into ballbusting and we do it as much as possible. She is very used to it and love squeezing them. But dosent like kicking and kneeing.
Last saturday her best friend visited us. Lets call her jessi, she is a small redhair with nice boobs and blue eyes and is 24 years old. She visits us very often and we drink and cook together, Most Times she sleeps at our couch nur Sometimes when she is really drunk she sleeps in our bed. There was never much of a sex thing between us. But last saturday this changed. We cooked some food and got a few mai thais. They are strong and we where kinda drunk early. Jessi said i have to Tell you a Story about a guy she meet in the Bus. The Guy has asked her If she can kick His Balls for 20 bucks. She said no and was very surprised and run away from him. She asked Sarah If she would do something. Sarah said for sure even without the Money. Jessi answered that she had never kicked a guy in the Balls but if she thinked about it she would love to give it a try. Sarah laught and said hey you can kick his balls and pointed on me. Jessis eyes opend wide and she said really? Can i give you one kick? If you let me kick your Balls i will grand you a Wish. I thought i was in heaven. I looked at Sarah and she nodded. I said yes you can kick them. So we got to the living room and i stood befor jessi with my legs apard. She asked If i am rdy. I said yes. So her foot swung up but she diddnt Hit them very good so i diddnt even flich. Sarah said oh you diddnt hit him good, so do it again. Jessi watched at me and i nodded. So she kicked again. This time she got them good but i am used to the pain so i diddnt fall on my knees but i let Out a little ouch. Jessi laught so hard and i saw that Sarah got her lets bust your Balls and have sex Look in her eyes. So Sarah stood up from the couch and said lets go on with it. Trust me he can handel it. She got very close to my and unwrappt my pants and got my Balls Out. I was Rock hard and jessi looked at my boner and said oh he likes it, nice let me kick His naked Balls now and Had a huge smile on her face. So the two kicked the hell out of my Balls and they started to undress each other with every kick i took. So after 10 minutes of kicking i was very sore and Said hey jessi diddnt i get my wish? She said sure say your Wish. I Said i want you to suck my cock. I haven't finished the Word cock and Sarah kicked my Balls as hard as she could. I fell down on the floor and it was so much pain. The two girls came down on the floor and each of them took one Leg and spred them. Jessi startet so suck my dick and Sarah massagede my Balls. I shoot a huge load in jessis mouth and Sarah punched my Balls at the Same time. After the Session jessi said she liked it and Sarah got an ice pack for my sore Balls. We sleeped together naked in our bed and the two grils licked each other and let my watch. In the next moring i woke up and wanted to go to the bathromm. Jessi, still naked was on her way Back from the bathroom and as we crossed path he grapped my Balls and squeezed them really hard. She wisperd in my ear i got the permission from Sarah that i can bust your Balls every time i want. She laught and gave me a kiss as she let go of my Balls and got back to bed. I was peeing and got back to bed as well. Later we stood up and got a breakfast. And everything was normal. When she was about to left us she gave Sarah a kiss and then she walked to me gave me a kiss a Well ans said i love you two we both said i love u too. Then she left our house.
Sarah and i havent talked about this since then because we work a lot and diddnt see each other much. Jessi has asked if she can visit us this saturdayt again.
What should i do? I love sarah and i dont want that our realtionship will parish because of Jessi. But i think i dont have to tell you how nice that evening was.