I am new to all this and I have never been in a triad relationship but it sounds like there is something unsaid and it doesn't seem to be you who needs to swallow their fear and put it out there. If it is not discussed, how can it be fixed.... I know it can be hard to say something that you know will hurt the feelings of another but in your case, feelings have already been hurt by not coming out with it. Did they give you any good explanation for the sudden mood changes? Nobody is perfect and I am always willing to talk and forgive if people honestly tell me "hey, that freaked me out so I was being a butt about it, I'm sorry". Just a thought for whatever it's worth....