Why someone that loves you just going to leave you for long distance?

We only have 1 hours of distance (with plane) he just start up saying "It's been a year i want you to here with me" "If you can come here we can continue this relationship but if not we can stay as friends" "Don't give me vain hopes" "Even just for a hour come here" "Stop agonize yourself" "There isn't another girl if there was this relationship wouldn't last longer" etc. etc. i know he's in this mode because he's sad and i plan to go there when i finish university and there is only 3 years left for me to finish university, I'm trying tell him to this but he's not listening me
Why someone that loves you just going to leave you for long distance?
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