<human>: This was literally 17 min ago.
So I was talking with my friend on Skype, who is on S3E3, and my brother is in the room reading A Storm of Swords and he just got to the Red Wedding. He tells me that he is very sad, and I respond that, "Well, Robb shouldn't have married whoever it was he did(it's different in the book than the show) and maybe he might still be alive."  The only thing was, I forgot that my microphone was still on, even though I usually mute it when I'm discussing the show or the books with my brother. So, my friend heard what I said and when I get back on he tells me that he heard what I said. I just said, oh, well keep watching. I feel kind of bad about it.

Give me the gist of the text in a nutshell
<bot>: I spoiled on of the biggest moments in ASOIAF to my friend who really enjoys the show and is not there yet.