I'd have to agree with everybody that moving on is the best advice. If you haven't found a job yet, I'd recommend looking into the financial/banking industry. There are usually teller jobs available a lot of places which can be a relatively easy job (I was a teller for a little over a year then moved up in the company.) that has good hours. A lot of financial institutions were on hiring freezes for the better part of the past year and those are starting to ease as the economy is showing signs of recovering, so that would be the best bet right now as far as the job front goes.
I hope everything works out for you, I know just being cheated on is rough, but you'll gain knowledge and wisdom from the experience even though it sucks right now. It's not your fault this happened, so just keep pushing ahead and things will turn around.