What should I do if I like someone a lot but they are moving back half way across the world in 6 months?

There is this guy who i fell quite hard for when he came to Australia to train with my club on exchange for a year. I got a mutual friend to tell him I was interested in him and he replied with "I don't want to start anything cause i'm moving back in 6 months". I don't know if he likes me or not and I don't want to let him go but I don't want to disrespect him if he doesn't want anything between us. What should I do? Should I keep trying or let him go? (we are between the ages of 16-17).

What should I do if I like someone a lot but they are moving back half way across the world in 6 months?
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