That is my addition to the adage "keep your friends close, and your enemies closer."
There are a lot of things that I will put up with, but being lied to is not one of them. Standing in front of me when I tell you something and acting as if you are utterly astounded to hear it, when you were fully aware that it was happening, and did, in fact, add to the situation, is LYING TO ME! Truthfully, I thought when that little lie was exposed, that perhaps your involvement and frankly, SUPPORT of the situation was an act of self-preservation, and I was willing to overlook it. Unfortunately, I have learned a hard lesson out of this whole fiasco, and that is to remember that just because I count someone among my friends, I shouldn't expect to be able to trust them and count on them if there is a crisis. Twice in the last year, I have done something to help someone (2 different people), which directly impacted my world, on a daily basis. Twice now my friendship and help has been repaid by deceit. We all know the story of the roomie from hell back at the beginning of the year. The second incident I won't go into details about, but will say that if I knew something that was going to cost someone who had been a good friend to me dearly, I would be talking to them about it, to be sure they were aware of the situation, before it turned their world upside down. And I would certainly NOT let it go on for 6 months, while they were oblivious to it.
Yeah, I'm MAD AS HELL about this, and I'm having to carefully take stock of the relationships in my world, to be sure I don't get shafted again.