Everfree

That still involves thinking about it :\ The word "marriage" doesn't come into your head and you make a yes or no answered from it. You think about the pros, cons, social expectations, your goals etc and then decide an answer.

I'll phrase it differently I guess ( I wasn't very clear). If it pops into your head, then until you think you are ready to think about it MATURELY, and in a comprehensive way, then you don't think about it seriously, It pops in your head for a bit, then you think "I don't really want to think about this", and you push it away. When you are ready, you think about it seriously

It's more along the lines of "I don't really need to think about this" but this is off topic. The issue is sex and sex is a lot less cut and dry then marriage. He should think about sex because it is male nature at his age. Sex != porn.