When is the age gap too much?

I was 17 when my 28 year old first husband, (the school photographer in my high school), got my telephone number off my senior proofs. I was a very ill informed 17, and had no idea about pedophiles and pervs...but he was both.

I think it depends on the character of each person involved. If a female is too young or too innocent, I think she should stay away from men who are 10 years older, or more.