Fake young couples

Have noticed recently young couples sending friends requests, generally we ignore but finally started a brief conversation with one. Seemed nice, they sent face pic and we reciprocated. Nice compliments and said they will be in our area soon. We sent our access to our private pics.
Nice compliments again.
Within an hour everything has disappeared, no trace of the conversation or views or the friends request.

Why?

Are they after pics? We do not do X-rated pics.

Did they get removed by RHP as being fake?

Have you experienced this?