Can feeling actually go away?

Can the feelings you have for someone really go away with time or will you always have feelings for that person. I have been single now for 6 months but my feelings for this guy won’t fade away I’d say if anything they are getting stronger. I’ve been telling myself that I can’t have feelings for him that him and I are done and that it wouldn’t work even if I did give him another shot. How can I stop from having breakdowns over him, even seeing new people but somehow I always end up subconsciously comparing them to him. Any ideas on how to stop caring for someone who I shouldn’t?
Can feeling actually go away?
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