<human>: Can you provide a brief rundown of the text in within 3 sentences?

What basically happened is that my friend (14) and I (15) go to get some stuff from the nearby shop, and he mentioned that a 13 year old girl in his class asked him to get her a pack of condoms, so she could have some "fun" with her boyfriend. I look like a 17 year old so I had to buy them and he paid me later. I was disgusted that a 13 year old girl was having sex, albeit protected, and had a bit of an anger flash. So when we went back to my place to drink something, I excuse myself (the condoms still in my pocket), go upstairs, take a needle and poke 3 holes in the packet. Barely noticeable holes. I later gave them to him and he apparently gave them to her. 6 months have paced, and  he hasn't mentioned anything, but I feel terribly guilty. Before you blame me, I have to say that in my defense, this girl goes out with every second guy in the school, no matter what age, and lost her virginity at age 12. So I really think she earned what might have potentially happened herself. This is the 5th time I've been asked  to by condoms for my friend's friend so that's why instead of refusing as I usually do, I just played along with it.

Am I a terrible person reedit? What would you have done, apart from refusing to by them?
<bot>: 13 year old asked a friend to by her condoms, said friend asks me to do it since I look older, I poke holes in them.