as for your guy friend, just understand him...
maybe he doesn't like to talk about it or make others worry...
if you remain to be understanding to him, maybe in the end, he'll eventually tell...
about your aunt, i can't do miracles but i'll pray for her to get better (i'm christian catholic)...
your dad, he MAY be too stressed like you and he takes it out on people... i'm guessing not only you...
your friends, confront them... ask them whats wrong... if they ignore you then don't just think about it too much...
like i say, THERE'S ALWAYS A RAINBOW AFTER A RAIN...
...when you were born,
people were smiling while you were crying...
...live your life well so that in the end...
...when you die,
you are smiling while people are crying...