Contacted me via Match and we moved to WhatsApp fairly quickly.
I did meet him once in person which I believe is unusual and he advised he had to travel to Doha for work (advised he is an architect who works for a company called BTNC in London) - his photo is on their website.
After a couple of weeks (lots of daily contact with pictures and videos) he advised that he had to come home as the client wouldn't let him leave and after consulting a lawyer he was advised the best way to "break his contract" was to pay some officials off.
He initially asked me for a small amount of money but then asked me to send some money to his PA in London as he couldn't use his own account as needed to ensure he/his company weren't implicated.
There were more and more "payments" needed to different third parties to enable him to leave Doha. Then he told me he was free to leave and was headed back to London via Dubai - sent me videos of him while he was away and also on the train. Got to Dubai and got 'delayed' there by authorities; asked for money towards cost of a new flight ticket.
I had offered to collect him from airport and he told me that he would likely be delayed as been told that he would have to be interviewed as not a UK citizen (lives here but Swedish citizen).
He was apparently then being "held" while UK police got all the documents from Doha and Dubai; all of which required more money to be sent to third parties.
I kept questioning him and saying it seemed suspicious but each time he provided a plausible reason why this was the case. After a couple of 'promises' he was being released the next morning I told him AGAIN that I had no money.
I then proceeded to phone my bank and report fraud; I told him that my bank had initiated an investigation and he went crazy; getting really angry with me at which point I blocked him.