I found it. I found the answer.

I found the answer.
I realised where to draw the line between friendship and intimacy for myself.
It may be an ordinary behaviour.
But as long as I'm showing preferential treatment to someone in hope of getting a response in return, I'm bordering dangerously on the limit.

Now abstinence comes in.

Hooray! Just like Galileo once said
"You cannot teach a man anything; you can only help him find it within himself."