Considering the shame that is associated with porn, it is credible that the boy has openly shared his struggle with you.
But the question is what’s his motive behind sharing? Is it because he is genuinely seeking a breakthrough in this area? Or is it because he is making you aware of his addiction to gain your sympathy and also so you don’t get a shock later. (We have heard people addicted to porn plead mercy saying: I don’t know what to do. It gets better of me every time)
Politely ask him some direct questions like: Why is he sharing it with you? Since when he has been addicted? Is he aware of the end road to porn? Has he taken efforts to overcome it? Has he opened up his struggle to someone mature and godly who he can be accountable to?
Porn is driven by lust and looks at sex as a commodity, thereby devaluing love, sacrifice and honour that are foundations to a godly marriage. It is as good as virtual adultery. Addiction to porn is progressive and unless dealt with in an aggressive manner, it can wreck relationships.
As hard as it may sound, it is advisable at this juncture that you stop pursuing this relationship and move away in an amicable manner (without putting the person down or hurting him).
Clearly the boy is not ready for marriage and needs time, space and lot of “Word” to get delivered from the grip of porn. The root of pornography is often about one’s inner health and a broken identity than an external desire.
Give him space to take account of his life and take intentional steps to get to the root of this addiction and eliminate it.
Please don’t start mentoring
If he is asking you what to do, please don’t take up the task of mentoring him, rather direct him to a godly and mature man who can genuinely help him through the Word of God. If he doesn’t seem to have someone like this, he needs to make sincere efforts to find one.
Getting free from porn often is smoother and faster when you have an accountability partner.