If you text an intimate photo of yourself to a lover for Valentine’s Day, that gift could end up costing you much more than a box of chocolates would have. 

A growing number of dating app users have fallen victim to “sextortion” scams in which fraudsters ask for explicit pictures, the Federal Trade Commission is warning. Once they have the images, the fake lovers demand money in exchange for not sharing them with a victim’s social media contacts.

“In terms of sexto …