Plane Ticket / Visa / Passport / Government Bribe Scam
This is a common romance scam variant used by Russian/Ukrainian and Filipino scammers to steal money from you. The general Plane Ticket / Visa / Passport / Government Bribe Scam is your Sweetheart will want to come visit you but does not have enough money and will ask you to send her money to help pay for a plane ticket, a Visa, a Passport, and Exit Stamp, or other Bribe so they can leave. Of course you can't just buy the ticket yourself because there are mysterious reasons that don't make sense, but it's just the way it has to be.
Once you do send the money however, it is unlikely that the visit will ever actually materialize.
As many people are now catching on to this, many scammers are trying variations of the same scam. Instead of asking you to send them money for their ticket, they will instead send you scanned copies of a ticket to convince you they are genuine and are really coming to visit you. They do not ask for money to buy the ticket or even for visa expenses… leading you to believe they are real. However, there is usually a last minute glitch and they will request you to send them a large amount of money without which the trip will be impossible.
These scammers know immigration rules and regulations well and might even cite some sort of visa requirement as their reason for requesting money. You might find their reasons actually check out and send them the money but in all likelihood, you have been scammed of your money. Instead they will be sitting back, fat and happy counting your money, while you are left heartbroken.