Steps to Take:

• Immediately cease all contact with the scammer! Block their email address, ignore their instant messages, ignore their phone calls;
• Contact Western Union to see if the payment has not been picked up yet (if not, cancel the transfer immediately);
• Keep your email conversations and instant messages on your computer. Make copies of everything to give to the various reporting agencies, and keep all receipts and envelopes –anything that can be used as evidence;
• Report the scammer to dating site you were contacted on, Yahoo Profiles, the FBI IC3 , police department (make a report) and our database;
• Contact the bank fraud department and make payment arrangements if a check/money order has been found fraudulent and you owe money to them;
• Contact the bank fraud department if you suspect a check you deposited will come back fraudulent;
• Contact your Postal Carrier/Post Office and ask that no packages to be delivered at your home/ work. Also bring checks and money orders that you received to the post office to make a report and turn them over;
• Contact your Postal Carrier/Post Office if you have been sent packages or letters to forward for a scammer. Keep the envelopes or shipping package for evidence;
• Contact any companies that have sent you gifts or merchandise and inform them that they were purchased on a stolen credit card and make arrangements to have the items returned;
• Contact your local police department. They may not do anything but it will help you to create a paper trail.

After being scammed you are put on a “contact” list by the scammers. You will be receiving random instant messages and emails from people you do not know. These are scammers trying to scam you again. Please immediately block them and report them as “spam”. You will know within 5 minutes if it’s a scammer by looking at the profile, how they write/speak, their picture, they state they live in a West African country (Ghana, Ivory Coast, Nigeria, to name a few), they confess their love in the first meeting, they claim God brought you to them, etc. Eventually if you keep blocking them, they will stop and you will be placed on a “NO” contact list.

 Source : http://www.romancescams.org/