Does the problem is in me?

Me  : "Sedih. Tahun ini gak ada agung lagi."
Her  : "Ada aku. Tahun sebelumnya juga ga ada dia, kan? Tapi aku ada terus. :)"
Me  : :')

Then..

She was gone.
With the girl she called girlfriend.
Choose her choice.
Leave our friendship even our sisterhood after 6years.
I never been this dissapointed before.
There's no one can make a distance between us, even our  each mate (before)
But her bitch girlfriend done it well. Just now.

this year recently
I lost TWO closest and I Love the most Persons.
TWO in a year..
Two (of three) persons who within' me on my last year birthday.
I've tried my hardest to save them, but they walk out of my circle.
Then what's wrong with me?