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I've heard a lot of people say that you should go out and "live" while you're young: go to parties, drink, meet people, do stupid but hilarious stuff, have lots of girlfriends, etc. They say that if you don't do it while you're young, you'll regret it later. Is this true? Is there some kind of value in "living" like that? Has anyone here not "lived" and then regretted it later?

I'm an American in his early 20s teaching English at a language school in Russia. I went with a group of colleagues and students (teenagers around 14 years old) to a parade and during a conversation with one of the students I learned that she has been dating a man twice her age for two months now. I know that her parents are not aware, she isn't comfortable sharing this with them, and she says she trusts this man completely. I can't imagine this man is normal because he is dating a child and now he is accusing her of liking me. I also have questions about her parents because it seems to me that a situation like this couldn't develop without significant parenting problems. This was all quite shocking to me so I read a number of relationship and parenting forums. In the American forums, the responses to situations like this are strongly negative, even suggesting the police be involved. Then I read Russian forums and the responses are nearly all positive, even to age gaps as extreme as this. What is your reaction to this situation? Is it really as dangerous as it seems to me? How can I, as a teacher, most help this girl? What do you think should be my response?