I hear she's going on/ out with her best friend's brother I only hang in/ out with...

Question

I hear she's going on/ out with her best friend's brother
I only hang in/ out with people my age

Answer 1

I hear she's going out with her best friend's brother.
I only hang out with people (of) my age.

Answer 2

I hear she's going out with her best friend's brother.
I only hang out with people my age.