If you're just dating, sure why not?
yes but the underage female/male has to have a parents consent
He can.
according to the state of Texas 3 year law a male in his 20s that had sexual releations with a 17 year old female would be sent to jail
Yes.
it depends on your state laws.
no
Yes, with parental consent.
people will not think so.
No.
yes
It depends on what state you are located in.
no.