SSRI's trigger latent manic episodes pretty frequently, and it only takes 1 lifetime manic episode to meet bipolar 1's requirements- it doesn't matter if an SSRI was the trigger. I had cyclic depression as a kid and I never got manic or mixed until my late 20's or 30's.
I did have hyper-sexuality as a child from like 5 or 6. I guess everybody has different symptoms at different times.