of telling the truth and being honest

"honesty is the best policy.."

ever heard of the above saying
i'm sure u have..
some private companies motto or something..
the MACC ke..
somewhere lah..
paling tak pun..
mak u penah cakap..
"tipu dosa.." or "kalu tipu nanti hidung panjang macam pinochio..."
something like that lah..
penah tak?

its true that being honest is a good thing..
yet at times it can bring bad omen to one..

for instance..
in a a marriage..
a husband accidentally got drunk and had a mishap with another lady...
wanting to be honest and truthful, hubby confesses to wife with clear conscience and saying sorry it was a mistake...
only finding to be greeted with an annulment document for breakfast..

another example..
friendship between a boy and a girl..
the girl, wanting to be honest to the guy confessing her real feelings and hope for the guy..
the outcome??
the girl being given the cold shoulder treatment and treated as if they never knew one another, whereas prior to the confession they were "like" best of friends...
the questions are:
-why the sudden change?
-is she ugly or not to his standard?
-is he scared of commitment?

the point is, why the sudden change..
why cant he just be truthful?
is it fair to be leaving the girl pondering where it all went wrong?
or
was it a mistake for her to confess to him?
...

my question to you is...
is honesty really the best policy in the situations above??
is it worth telling the truth and being honest only ending up hurting and getting yourself distraught??

O' someone,
do tell me,
where did it all go wrong?
why the sudden change?