He friended me on FB 6 weeks ago. We never talked on messager and over phone on Hangout app. No personal info…except the number of children we each had. The kinds of jobs we had, and our relationship with God. We ended every conversation with prayer. Than 2 nights ago he asked for a favor, since he trusted me. To go purchase a Walmart, and take a picture, front and back (with scratched off number on back…and send picture of the card to Hangout. I have not does so…is it a scam?