If you’re concerned about the person’s age ask him/her to send a recent photo.
(Realize, of course, that the “recent” picture they send may not truly be recent — or it may not even be a picture of your “date.”) Also, protect yourself from people who might be emotionally unstable.
An unpleasant surprise can often feel like — or be — a scam. If something sounds wrong — like a lawyer who says he’s 35 years old but has 25 years of professional experience — start asking questions.
Until you get to know your date better, conceal your personal information, agree to meet only in public and always let a friend know where you will be.