There isnt a rule about it but honestly i think you should wait.
ask her out
No.
At the age of 14, certainly not. The 19 year old would be up on charges and the 14 year old would be a runaway.
You don't.
Wait until you are 13 or 14
Yes.
Yes. Even if you are with her and her parents, an 18 year old can get in toruble for that.
If he says that he is in love with her then ok but it's not common for a 14-year-old to be like that. He probably just likes her.
She may have had an abortion or a miscarriage.
She is Nick Jonas's 14 year old girlfriend and she is from England.
He's current girlfriend is a 14 year old girl from the UK called Charley Myland.