Dating scams now are becoming a global issues, thanks to social media.
Here are some resources to study, if of interest for you. Please contribute with your sources.
popular media:
FTC: https://www.consumer.ftc.gov/blog/2015/07/faking-it-scammers-tricks-steal-your-heart-and-money
https://www.wikihow.com/Spot-an-Online-Dating-Scammer
peer-reviewed articles
Whitty, M. T., & Buchanan, T. (2016). The online dating romance scam: The psychological impact on victims – both financial and non-financial. Criminology & Criminal Justice: An International Journal, 16(2), 176-194. doi:10.1177/1748895815603773
Kopp C, Sillitoe J, Gondal I, Layton R. THE ONLINE ROMANCE SCAM: A COMPLEX TWO-LAYER SCAM. Journal Of Psychological & Educational Research [serial online]. November 2016;24(2):144-161. Available from: Academic Search Premier, Ipswich, MA. Accessed April 3, 2018.
Whitty, M. T., & Buchanan, T. (2012). The Online Romance Scam: A Serious Cybercrime. Cyberpsychology, Behavior & Social Networking, 15(3), 181-183. doi:10.1089/cyber.2011.0352