I was 16.
After a few weeks, I was in love. Luckily, my girl (age 14) also fell for me.
So we courted (didn't 'hang out', 'go out', - 'courted') until we were old enough to get married. And did.
42nd Wedding anniversary coming up in April.
if you're interested, check my profile for a hub about how our marriage (as do thousands of others) disproves the common belief that 'first love is never the lasting kind', or that 'you can't know your own mind well enough to know love until you're (insert preferred age here)'.
True love strikes. And endures. Even if it starts as 'just a crush'.:)