A Boy and a girl have sex
It just happens, there's no right or wrong way to fall for a girl. When it happens, you'll know. :)
Then they will date and that's all.
nohing happens
try talking with this girl, and see what happens
a girl that happens to be me
Nothing
A girl should be attracted to her boyfriend. Nothing 'happens' except that they love each other.
Nothing happens.
Nothing happens seven years after a girl has her period. There's nothing specific about this length of time.
Then the girl will live a little longer.
That depends on how you discover the deed... Were you invited?