Hi wikusgerber, welcome to Scamwarners.
If you could post some of the details of this person we should be able to provide you with some information and be in a better position to help you.
If you have been contacted by a scammer, the very first thing is to cease all contact with them immediately, if you have sent money, there is a very slim chance that the scammer hasn't picked it up, contact Western Union immediately and cancel any transactions you have sent, sometimes in a very small number of cases you may be able to beat the scammer to your money.
Before posting about your scammer, please take a look at this thread;
viewtopic.php?f=1&t=3561It will give you a good idea of how to best help us to help you.
If you are not sure of anything, please ask