well that
have u make them angry in some ways..
if not , u can ask for the reason for the cold attitude.
it is whether u wan to be their friend again!
if yes, u have to forgive and forget.
if no, move on and make new friends.
sometime, friends will back stab u too.
see how u make ur decisions.
well some friends come and go , some stay with u for lifetime, so
are just friends..