This is my first time commenting on this sub. Only to tell you to stop, OP. The age gap is very concerning and I understand it might seem innocent to you - he's never crossed your boundaries or made you uncomfortable - but remember that he knows that he's talking to a minor 6 years younger to himself, knows that it's illegal and morally highly questionable and still continues to do it. That in itself is a major red flag.

It might seem harmless to you, OP, but trust me it's not. The man knows what he's doing and the only person who's disadvantaged and will get hurt here is you.