Self-Disclosure : Heaven or Hell?

I am pretty sure that you guys are familiar with this term " Self-Disclosure"
but how many of you actually self-disclosed before and what do you get in return after you self disclose yourself?
Based on my experiences, I think Self-Disclosure is more to Hell,rather than Heaven
or perhaps I have chosen the wrong group of friends to disclose myself.

Back in my secondary school,
I used to be so damn freaking close to this girl, J
Well, I was close to her ever since I'm in primary school
but things get complicated when we entered secondary school
I got no clue on why other girls were prejudice towards her
even thought we did like lesser than nothing to harm them ( I'm from all-girls-school btw)
and you all should have guessed out what a typical best friend would do right?
Supported her as if she's your goddess or whatsoever.
and Trusted her as if she's the only friend of mine
So, I am always there for her,no matter what happened
We used to self disclose to each other whenever it is necessary
and that's my biggest regret ever
I swear! = ="

Early Form 4, we got separated because she chose to enter Arts class while I went for Science
and we merely even talked to each other
as she found her new friends there and we're in the different class
Things were fine until one day
when I entered the school compound and everyone was looking at me
as if I'm from Mars or whatever
Not being too paranoid, everyone was actually giving me the look of despise
Feeling weird,
I managed to grab one of my friends and yeah..she told me that
J had spilled like..60% of what I disclosed to her?
I was like..." OmFg?! "
It was so freaking embarrassed and I don't even know how should I face my other friends throughout the whole year
Fortunately, I still have friends who backed me up and they don't mind on those rumors spread by J

At that time, I really felt like..ruined as in my image was ruined and others looked at me differently.
Even though I still have some couple of friends who were always there for me,
It was super hurtful and I really wished that I could stab that girl with my own hands XD
After that day, our friendship went OFF permanently and until now,
I did not take the initiative to even talk to her
and when I saw her, I just acted as if she's made of glass

So,I remind you guys
If you wanna self-disclose, make sure that the friend or relatives of yours are TRUSTWORTHY
else you'll end up regretting like how I used to be- -"

and once again, I'll stick to my statement of :
"Self-Disclosure is HELL rather than Heaven"
until I managed to find someone who could change my perception on this matter.

Yours Truly,
Yin Jun