I want a pink elephant!!!

or maybe this?

Mirrors

For a long time, I have been startled by the phenomenon that people I know reacted so differently when interacting with different people around them. Recently, however, I've come to meet or better know some people very different to me and I've come to realise that my own behaviour changes rapidly according to theirs. It is a bit similar to (how we always enjoyed as kids) someone being without voice and wispering and suddenly everybody is talking silently. They still send more or less the same messages but the tone is entirely different. Now I could experience the same thing on myself, and on some occasions I hardly recognise myself, suddenly being more straightforward, softer, more aggressive... Now I just wonder how this reaction is balanced... if it is even, so both characters influence the mood of the situation or if one or the other forces itself on the other one? In a sort of hierarchy of moods or attitudes..? Who is the mirror and who the one being reflected?