Today realization.. Tomorrow pain.  The day after... regret.
Although what is there to regret when there is no other way for a situation to have turned out differently?  How can you regret when the realization came a year and a half too late?  What do those 3 words mean if your ears will never hear them?
All I really need to know is...  Is he your soul mate? Does he challenge and excite you?  Does he thrive on every word that leaves your mouth?  Do you find yourselves up till all hours of the night planning the adventures your lives will create together?  Do you feel your heart skip a beat when he touches your skin?  Do you lay awake at night wondering when you'll get to spend even one more second in his presence?  Would you move out of state, quit your job, your schooling, your family, your previous lovers, your life all to see what adventures you will make together?  Is he your soul mate? 
Assuming life only gives you one.

To my father,
To him who has passed me by,
Time and time again.
To him who sits quietly,
In his fort built on ignorance,
And painted with fear.
Time has slipped between your fingers once more.
I fell out of your grasp years ago...
The day you decided I wasn't worth holding onto.
I left and havn't looked back,
Until now.
Now it is me,
Walking down this isle alone,
It's my turn to pass you by.
Stay in your little hideaway,
Blind to the truths that surround you.
Sit, stay and tighten up those locks,
For it is me who goes on...
It is me who will be able to step over your ignorance,
And be able to move on.