I'm moving away from my crush - should I tell him how I feel?

acomplicatedkindness
Basically I'm moving to a different country in a week's time, at least for three months (possibly staying there forever depending on job situation). This guy I have liked for a long time has been popping up everywhere recently, saying he'll miss me and trying to hang out more because I'm leaving. I know this could just be a friendly thing.

Should I just tell him to get it out of my system? Or would it make me feel worse? Is it selfish of me to put it out there, since I'm the one leaving and he's going to have to deal with it when I'm gone? What are your experiences with this kind of situation?
Updates
+1 y
Thanks for all your answers! Argh this is so stressful. I'm finding it very difficult to even talk to him properly now because there's so much pressure on me to tell him/not to tell him.
I'm moving away from my crush - should I tell him how I feel?
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