@Lovingjoy,
I'm wondering what has really changed with you?
You admitted to a 'mistake' once, and
yet kept pestering her - you say you've made a mistake
but the problem (jealousy) still exists...why then should she believe anything has changed?
So you apologise
but still gets jealous - she gets justifiably angry, and in retaliation, you show the whole world her past - in retaliation you betrayed her ! You betrayed her on many levels, and deep levels - you betrayed her terribly and publicly to the people she cares about the very most...why should she ever forgive you? If you want her back, you need to find the answer to this question - and the answer by the way, isn't 'love' - you loved her and still did this.
...and the problem (jealousy) still exists...what have you done to change this within yourself?
ie. 1. Why should she ever choose to be with someone again who did what you did...AND... 2. hasn't fixed the problem (the jealousy) within yourself that lead to it?
No sane person would go back to you after that, and without hope of safety.
...then again, we humans aren't always sane.