What does it mean when she calls me young man?

[lifehappiness]

So I've been texting my crush recently, and what I did was that I started flirting with her, and every time I do that she turns out saying "young man", last time I told her missed you, princess then she told me missed you too young man, would anyone tell me what is actually meant by this stupid phrase?
Thanks.

Updates

+1 y

-Am 16 and she's 15

[WindFary]

For myself; it is a way of acknowledging that you're not a boy! And, minimizing the age difference at the same time.

[ivanka]

its fun, its ok... she could call u darling, my friend, hun, etc etc...
young man is cute one

[Succcesssfulll]

She likes that nickname for you. I guess because your young, even though she's younger.

[subzero007]

maybe she loves to call you that nickname basically :p

[linkywinky]

That she's your grandmother in disguise?

[thewanderingme]

probably just thinks it's cute.

[indie_rock_chick]

she is trying to tease you ;)

[Despondency]

How old is she?

[lifehappiness]

Am 16, she's 15

[Despondency]

It's some inside joke that only she gets.