This may sound mean, but it's true. Move on. There's nothing you can do about it...
OR always call him when you think you should like when you do something really cool and might not do again new family members(like adoption having a baby etc.) or just when you wanna tell him you miss him! This is just a suggestion if he just moved to a far away country if he died well.... stick with whats up there
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Moving on is definitely the best idea. The more time you spend with him/her before they leave the more it will hurt.
Chat with our AI personalities
If you will never see your crush again, it's best to focus on moving on and finding ways to occupy your time and thoughts. Try engaging in activities you enjoy, spending time with friends and family, and meeting new people to shift your focus away from the crush and open yourself up to new possibilities in the future. Remember that there are plenty of opportunities to meet new people and potentially develop new attractions or connections.