Would it make him feel better?

I'm leaving this city in a week for university. He is my private drums teacher and i'm about to be 19, he is 25. Even tho he offers me coffee, food etc and makes asks me questions so that we chat after class, i think he is just being nice and gets bored there. As we talked i learned that he started smoking, left some big city and came here, left his job, gained weight, even gave is cat to someone else.. and coincidentally most of these things happened roughly 2 years ago. Now that they add up like that, seems like something happened 2 years ago... i really want him to feel better and happier but im just a "student". Should i express my feelings before i go? But if i do, i will never be able to see him again. Although at least he will know he is being loved.. as if my love means anything to him :/

Would it make him feel better?
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