Well... ya know... I'm an older guy. So, perhaps for me, it's a matter of trying to recapture just a pinch of my youth. But I find myself reminiscing about old loves fairly often. I presume this is pretty common.

I guess one could perhaps delve into the psychological aspects of why this happens & what it means. But, personally at least, I think that's just making more of it than is actually there in most cases. It's kind-of like the old song by Julio Iglesias: "To All the Girls I Loved Before". To me, at least, it's just life.