Kelly, as much as you think you love/like him right now, he is soooo not worth your time. He is using you when he has no one else to fill up the "down time". You deserve so much better! Trust me on that, he's is not "the one" if he treats you like that. While he's away, you should go out and try to find someone, meet new people,keep your mind off him, forget about him.

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Never regret something from your past, everything happens for a reason.