What's the meaning of true friendship?

Recently, I learned (the hard way!) the meaning of 'true friendship'. Someone I called 'friend' hurt me so bad and made me cry. I asked myself.... 'is she a true friend?'. Dunia and Akhirat?? I read somewhere that true friendship is perhaps THE only relation that survives the trials and tribulations of time and remains unconditional. A unique blend of affection, loyalty, love, respect, trust and loads of fun is perhaps what describes the true meaning of friendship. Well, obviously SHE did not respect me.... :P

How can a friend treat another friends so cruelly? Should friends stick together, no matter what? And what do friends do when a friend has hurt feelings? Sad to say... I do not have the answer... :( They said 'Time Heals All Wounds'.... I certainly hope it's true.... may be one day I would find the heart to forgive and forget.... insyaAllah....