What could this feeling if I have a feeling (in a good way) about an ex mean? not thinking "what if" senerios?

My girlfriend and I broke up months ago due to LD and we both weren't ready. I am pretty at peace with it all but I just have a feeling about her (in a good way). I'm not thinking of "what if" situations or anything Its just a weird feeling and I can't pin point why. anyone experience this?
What could this feeling if I have a feeling (in a good way) about an ex mean? not thinking "what if" senerios?
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