I’ve randomly been thinking about my high school crush. Is this normal?

For the last few weeks I have been thinking about my crush from high school. I ran into him about a year ago and never thought anything of it until a few weeks back when he popped up in a dream that I had. I am married and love my husband but for some reason I can’t shake this. Is this normal?
I’ve randomly been thinking about my high school crush. Is this normal?
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