She's Gone

What does it feel like when someone you love, leaves you at the most difficult time in your life?
What makes someone run?
What happened to "I'll love you forever?"

How long must one grieve, understand, theorize the breakdown of a long standing relationship?

How come there was no communication?
Why did she run? Just prior to running, she was asking me what my 10 "must see" places were, that I'd like to go... Why the sudden change?

Did she wake up one morning and decide that my issues were more than she could tolerate?

How does one put this all into reason?
Do I thank her for the 6 yrs she gave me?
Or do I throw away her number?