Am I overreacting for ending a friendship over a prank?

This was actually a prank on my boyfriend, not me. I have this friend who has a boyfriend and they like to make videos of them doing pranks. In the beginning the pranks they did were funny. I didn't mind them. The problem is it became too much, too often, to the point I didn't know what was a prank and what wasn't. I can't tell you how many pregnancy prank they pulled on me. I was almost done at the suicide prank. I just didn't find it funny. They took a break from pranking me because I was starting to get angry. My boyfriend is also friends with them and their pranks just got bigger and bigger until last week when they decided to prank my boyfriend on his birthday. My boyfriend turned 19 so they took him out drinking to celebrate being legal age. They decided to prank him on his birthday by doing a kidnapping prank. They got him very very drunk and pranked him that he was kidnapped by a CULT. He passed out in the car and they got out of the car, dressed in cloaks and got back in to wake him up and "kidnap" him. They stripped him naked and tied him with duck tape to fake a kidnapping. They ended up calling the prank early because my boyfriend's panic attack was so bad he started to vomit all over himself. They were trying to drive him back to my parents house and I just see my naked boyfriend covered in vomit having a panic attack. They explained the prank to me and I lost it. They told me to calm down and they will delete the footage. I asked where they really gonna post him naked online and they were of course going to censor everything but that didn't matter. My issue was they weren't really apologizing. They were just downplaying it and saying they will delete the footage. I blocked them both on Facebook. I almost thought I had to take my boyfriend to the hospital because my mom is a nurse and has a blood pressure wrist cuff and his blood pressure was so high. Since my friend has been emailing me saying I'm overreacting and that it was just a prank and they deleted the footage. I don't think that's a prank. And I'm over their shitty pranks. They were supposed to take my boyfriend out to celebrate his birthday not traumatize him for clout. They think since they deleted it I have no reason to be mad anymore. Tell me I'm not overreacting and have a reason to still be mad?!