<human>: I'm on mobile so sorry for formatting or spelling.

So it's basically just the title, my brother got testicular torsion and they had to remove it. I feel like it's most likely my fault because I read that intense activity could cause it and prior to today we were lifting a bit. I'm thinking maybe that caused it. His form wasn't the best and I should've told him to use lighter weight and work up to heavier weight, but I didn't.. 

Another thing I read was that something like minor injury to the testicle could cause it. And what do you know, I also tried getting in cheap shots at his nuts occasionally. Sort of like in middle school when people would give other people "corndogs" and knee their butts. I know its horrible and I should feel terrible for this and I do and I have to live with it.

Other than that, he's not like super active so there's no way anything else could have caused it. I just don't know what to do, he just got out of surgery and I'm not sure if he knows that it's my fault this happened to him in the first place. I feel like I shouldn't be making a big deal about it because it's him that suffered the most from this. But I just can't help but feel bad about it. I can't imagine what losing a testicle would do to his self esteem. should I tell him that it was my fault and apologize? I don't know how to make it up to him. What do I do?

Give me a shortened version of the text
<bot>: I think I was the reason for my brother's testicular torsion and I don't know how to deal with it.