This is actually a very good question.
A wait, in very general term, is probably a moment of inactivity
and stagnation.
When you talk about 'promise', it kinda tweaked the meaning of
wait. Usually, it connotes some kind of delusions from the victim
him/herself because a 'wait' is not a promise - it's by choice. And
when he/she sees it as a promise, it's probably more narcissistic
than coming from genuine love itself.
You may ask: how do we differentiate delusional wait from
non-delusional ones?
I supposed the judging comes from the circumstances creating the
option for waiting.
But I must accentuate that waiting does not denote faithfulness or
loyalty. Many people believe that waiting signifies dedication in
love, but I can blatantly tell you it isn't. Not a cent.
I will reiterate my earlier point: waiting is by choice.
CloUdiSm states: '...Once in awhile, right in the middle of an
ordinary life, love gives us a beautiful fairy tale. And people
that weren't granted the fairy tale will recreate their own
chapters... writing in scripts of fantasy...' 
I will share something - not to refute, but
to provide one interesting view:
Youre the guy of opportunity cost
So much so that ultimately, you are the one you love the
most.
You sure loved your woman; but that portion of love will never be
more than what you have given to yourself.
Your love for self is so much that you cannot afford to put
yourself at a compromised/disadvantageous position because you are
always thinking of opportunity cost.
From here, how much do you think your love weighs on your side...
without always having to mention the love on the other side of the
scale first? 
***
I am saying this because I am also somebody with
concentrated dosage of self love and a good friend pointed this out
and saying those words to me. I thought it was refreshing because
it wasn't something that I consciously thought of and it burst
certain linear thinking I had previously.
I think that the most amazing thing about love is that sometimes,
it transcends logics?
The reason for your absolute mindset is because you have yet to
meet someone that would truly make you fall head over heels for.
Perhaps that day might come if you have decided to love yourself
less... and someone else more.
Cheers
