double faces..am i?

someone just told me that...
don't know should trust me or not?
hmm..suppose to say, will not trust me anymore!
as what he mentioned: the whole world are full with heartless people...
included ME....
what is the reason that make he think that i am double faces...
i don't know,
i just try to be friend with both of them...
both of them are my friend...
i never try to support anyone of them,
i just try to be the middle man,  and hope that i can save the relationship between them...
that simple only...
but in the end, i became the heartless people...with doubles faces...
totally .....      speechless......
Maybe, i am really belongs to that kind of people...
the one who heartless.
i just want to tell you that, u still care the friendship between u and him, that is why, you mind...