so does that means they will be together forever and will never
fall for somebody else?even if they do fall in love with another
person..their heart will still linger at the past relationship with
their previous partner?eventually...go back..??
Of course by right they should be together forever if they don't
change. But people change because they themselves wishes to change
and are constantly learning and seeking ways to change themselves
in their friends, environment, movies, people they know, people
they have heard about, idols, situations which forces them to
change in order to survive....
Very few people in this world doesn't crave for
changes, and these are usually people who are confident,
contented, satisfied with themselves and their well-being
in their lives.
Many times in our lives that we had encouraged our loved ones,
friends, or even people whom we have never met before (like in this
sgforums) to change for the betterment of themselves and their
loved ones. But not many people are able to change their lives
even though they have successfully encouraged or advised their
others to change for the better.
themoment86, it depends on the individual if they wishes to
change or have the will to change or not. An ideal relationship
would be one where the couple changes at the same pace together for
the betterment of their relationship...OR the couple doesn't change
or do not see the need to change as they both believes their
relationship is at the peak/prime of their lives and they are both
contented with their relationship (This is RARE...but very ideal,
even I also wished to find someone who can make me feel this way
too).
If a couple doesn't change at the same pace or one changes more
than the other who doesn't have the will to change, then the
relationship will eventually becomes one-sided or both will
find themselves drifting apart eventually and their reason to be
together would have been lost or changed unconsciously. This is
common nowadays.
Couples who broke up and then realised that they don't like
their current changed lives compared to the previous one before
their lives changed, may find their lives to be too miserable and
misses their old lifestyle before they change. Some couples will
discard their changed lifestyle and return to their previous
contented lifestyle and likely to seek out each other's company
again. Some couples may think of it as an opportunity to find a
better partner to complement themselves again, but they will
definitely make a mental note NEVER to change again as they do not
wish to taste such misery ever again in their relationship.
Couples like this will most likely to have flash wedding. 
People are different, life is ever-changing but religion is
constant. So don't be surprised to find people seeking religion for
constant peace in their lives or relationships.
Look for someone who shares the same beliefs in life as you and
is as KIND as you. I've met couples who have found each other as a
perfect match as both of them are as EVIL as themselves. 
And of course, you must always find someone who can make you
happy, must be handsome enough to make your heart flutters, must
know how and when to romance you sensibly.
How can I forget to mention must be able to afford at least
MINIMUM 30k ring for proposal. 