Money Laundering

I'm from Hyderabad. Staying alone. Came in contact with a person on face book. He said that he was interested in me and would like to have me in hos life as a life partner. After we exchanged numbers everyday he used to talk to me only on video. Observing that I was alone he asked about my children contact and my parents contact with me. Later made me get disconnected with ghem and before coming to India he said that he'll help with my property issues. He did bring a party and made me sign an agreement in which the party had given me some amount. After some days he said that he wanted hold chain and wanted to also book his tickets. Also said for processing for me to go abroad he would need some money. Over all he took 6 Lakhs from me. After that keeping me in the same conversation he went back US. I realised that the price was very less I told him that I need the buyer number to talk and cancel the agreement. He said that he is out if station and that he will talk to him and inform him. Post that he never asked me about further transaction of the agreement. Neither the US vitizen nor the buyer contacted me for 1 year. The buyer recently came home directly and asked when will I settle the agreement. I'm in a fix now asi don't have the money nor any processing is been done