my crush is going abroad for university?

Hello! Well I think him being away might help the process of moving on. Getting over someone is really hard, but it's a part of life and there'll always be a lesson at the end of it. Try and remember that if it's meant to be it'll be. Don't be afraid to be sad, and to miss him, but remember there will come a day when you'll be okay. It'll all be okay in the end and if it's not, it's not the end! You can do this, it might be hard but you'll come out stronger and maybe you'll meet someone new in the process, or maybe he'll confess his true feelings, who knows! Keep an open mind and remind yourself that it's only temporary. I'm always here if you need to talk or anything. Lots of luck and love!

you will get over it once he's been far away for a while. For now, try to think about every little thing you've ever disliked about him, even if it's really superficial. Like have you ever seen him be rude to anybody (especially his parents or service people)? does he have greasy hair? does he have bad fashion taste? that time he smiled and had broccoli in his teeth? etc... just tell yourself he's repulsive whenever you start daydreaming about him. It's kinda mean I guess, but I used to have problems with obsessive crushes (though usually only lasting a few months each, not years), and this is a really effective technique to frame him as "neutral feeling" or "unattractive" in your mind.

Remember it's all in your head so you can think whatever you like, but this obsession is unhealthy. Thinking "he's gross and dumb" is just a tool to help you get control over your mind. I know how horrible these obsessive crushes can be for mental health, absolute torment. So I think it's important to do whatever you can to break yourself free of the crush.