What the heck is the definition for gf/bf for you guys? Tbh I don't consider anyone my boyfriend unless we actually talk about real commitment and stuff. Bf/gf is serious talk, personally.
I've had several relationships in the past, my longest lasting 9 months (no, I was not pregnant thank you), but I never dubbed any one of them my "boyfriend". Just having the same feelings for each other doesn't merit you the "boyfriend" status in my book. Not that I'm afraid to commit, but I have yet to meet someone who I know is actually going to stay for me, at least for a really long time, if not forever. Puppy love and childish relationships don't really count as a bf/gf relationship to me. o:
But if we ARE going to go by the common definition... my youngest was probably 10, though it was a few years later when my childhood crush (I was 5 when I had a crush on this guy) confessed that he used to like me, too. So... yeah. x)