<human>: So, my friend, we'll call her B [17/f], and I [17/m] are really close, We've known each other for about 7 months and it is one of the best friendships of my life.  The other day I really messed it up by going to a rave and taking MDMA after I told her specifically I wouldn't.  After a couple days of fighting she agreed to be friends, just not as close until I could prove I've gotten the help to not do drugs again.  The problem is that one of the things she wants me to do is cut myself off from one of my Co-Workers, K [18/f], who I took the MDMA with because she thinks that she pressured me to do it.  In reality all K did was ask me if I wanted to take it with her because it was her first time (and my 2nd).  There was no pressure from her specifically, more the fact that I knew a lot of the people I was going with would be taking MDMA and I didn't want to be the only sober one.  B can't see however that the fault was all mine and she refuses to talk to me if I keep K as a friend.  I really don't want to lose K either because she despite her party attitude she has given me some great advice in the past and been a close and overall great friend, so I have no idea what to do.

Give me the gist of the text in a nutshell
<bot>: A close friend wants me to chose between her and another close friend who I took drugs with but didn't really pressure me into doing them.