How can I get over him?

We met at work about 3 years ago. He was incredibly sweet and we were both into eachother but it never went anywhere. I haven't seen him in over a year and a half and I haven't talked to him in like half a year.

For some reason I'm still kinda hung up on it. I feel like I'll never meet anyone like him again. Tbh I feel really lame for still having feelings for him considering he left me on read for a whole ass month lol
How can I get over him?
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