Suspended from work on Bullying & Harassment charge but will i get sacked?

I got suspended from work today on bullying and harassment charge. I will explain what happened to the best i can and hopefully someone can tell me where i stand as I'm afraid of losing my job.
A colleague of mine was caught out by the police for buying work mates flights/holidays with a stolen credit card. In august this person also asked me if i wanted cheap flights as i was planning to propose on holiday and i told her no. Little did i know the person has conned 5 colleagues of mine and i could of been one of them.
The night i found out the person got arrested for this and the fact i came so close to the person ruining my proposal and losing my money i got upset. Straight away i went on facebook and wrote on her wall to show my disgust on how she could do that to so called friends and even me as she knew what i was planning. The massage was a firm one and to the point where i didn't care who read it as she had embarrassed alot of people so i just wanted to embarrass her.
I returned to work the next day only to be suspended on bullying and harassment. I have worked for the company 10 years and i get on with everyone, never would bully or harass anyone. I was just so upset by what she had done i felt i had to send her a message of disgust. I feel i have not harassed this person or bullied them but I'm afraid I'm going to get the sack. Surely this is not harassment or bullying?? Someone please advise me as my investigation is on thursday 10th nov..... thanks.