It isn't that it freaked me out or that I didn't know it was possible, but that it just makes me feel oddly embarrassed, not for being attracted to a guy, but I guess... I dunno, for having those thoughts about someone I knew "before". It breaks that divide between my old life and my new life in a way that I have not experienced before I suppose is the big thing.
Sort of like... if I met someone in a year(not even in a romantic way necessarily), and there is a photo album chronicling the relationship. It would be them and the new me, all is well and good. With people I knew before, the album may contain them and the new me, but it would be right alongside them and the me with 100 extra pounds, a beard, and no passion for the future. With family or friends, that's one thing. But the second you toss attraction into the mix, I envision that same discomfort I'm feeling now when old me is in the equation at all.
I dunno, I know it's not something to worry about or think about too much, but I at least needed to talk through it I guess.