I have an older girlfriend who picked up a man on an on-line dating site. He moved in with her and soon was telling the neighbors that he wanted to marry her but that he hoped she would die so that he could inherit her stuff. The men got together and went to her house and told him to pack up and leave. Soon afterwards, he was back on the dating site with a picture of him in front of her nice, big house, claiming it was his!

I say trust your gut. If it doesn't feel right, it's not!