I think maybe 2nd or 3rd grade. I remember this boy who sits next to me was playing with his penis one day in 2nd grade... I don't remember if I liked him I think I might have but maybe was more confused... I don't know. I do know I started having more memorable crushes the year after that.
This kid in kindergarten had a crush on me. I can't remember my first crush. I generally thought boys were friends or a different breed. Oh wait, I remember. There was this cute little kid, his name was Kevin. And we were little boyfriend and girlfriend (mind you this was 1st grade) and he dumped me in the hallway. No one was around, so he saved my little feelings. But he was a cutie. I JUST remembered that from all those years ago.
Fourth grade. I was in love with a blonde troublemaker named Ryan Sawyer. He didn't know I existed. Now that we are grown, he works in the same engineering firm as one of my brothers. I asked about him when we saw each other last, and my brother says he's a jerk.
Kinder-garden, when I was 4 apparently I was crazy about a blond kid named George, I started early in the crush business. But the first REAL BIG (only) crush was 9th - 12th grade when I was 16. He made me so happy and yet o sad...