Reality~

Is it true that LOVE is NOT EVERLASTING?

Even someone who is so loyal to his family..
For 10 years,
He did not even fall for the flirtation around him,

However,
He still have a CHANGE of HEART...

Is this means that even MARRIAGE also can't prevent the change of heart?
Even if you are MARRIED,
You will still fall for others...
And betray your partner..
Leaving her with suffer and hurt...