Was it right of my ex to do this?

Do u think dis was right? Well ya see, I had this girlfriend, and she was smoking man. But anyways, she dumped me oneday. Idk why. I was really sad. So anyway, a couple days ago, there was this big party that this girl at our school was hosting at her rich mansion. Anyway, I was invited, and so was my ex girlfriend. This party was just a couple days after she dumped me. I was still feeling low. And so at the party, I talked to my a friend of mine, and we were gonna do a prank. So I came to my ex, and said to her, would it be alright to talk to her in a private area. I took her near a closet, and then, her friend came in too cuz she was wondering where she was. And then, I left the closet, closed the door, and locked them in. Then after 10 minutes I let them out, and my friend was with me laughing. We apologized and said it was just a prank, and then my ex came out and said "Great prank" and kicked me square in my nuts with the tip of her high heels as hard as she could and I fell down in agony and excruciating pain. The other girl who was locked in as well who was the friend of my ex then came out and kneed in the groin my friend who helped me. He then fell down writhing in pain too. The girl hosting the party came and asked whats with all the noise. My ex and her friend told the whole story and the girl who was the host forced me and my friend to leave. So me and my friend crawled out cuz we couldn't stand after the lowblows we received. I felt bad, because I was guilty, and I just was kicked in the nuts. So I feel bad, but do u actually think this was right of my ex to do this?