True, but some people feel more comfortable through anonymity. By coming here he can seek advice from many individuals and do it in confidence too. Its only a 'tech site' but alot of people here are very knowledgeable and offer great advice. Yeah his problem isn't really a problem, but I guess at the end of the day he is a kid and it seems like a problem. If he actually has serious issues, then yes, see a doctor - but it sounds asif he's just lovestruck.
Also, this 'computer forum' has a community disucssion (amongst other similar ones) for a reason - people talk about more than computers here
That doesn't give an excuse for any of you to be advising an obviously disturbed child. He needs professional help, especially if he admits to self mutilation. If he is a harm to himself the situation is too serious for the internet to solve.