I lost a friend to a lie that someone else told.?

it sounds like you already know who started this mess. now that it's over you might want to ask your friend about it in a non-confrontational way or as laid back as possible. since things are so far over he might tell you the truth. after you try that, try to talk to abby. tell her that you didn't say that about her and you don't know how all of this got started. ask her if you could try to be friends again. if that doesn't work, then you should try to leave as much of it behind you as you can. hope this helps and that everything works out for you