Disclaimer -- I am not a lawyer.
In most jurisdictions, 18-year-olds are presumed to be able to give consent to sex, so if both parties are willing, it's okay.
Yes they can. As long as nobody is above 18 and there is no sex involved. Make sure all the parents are okay with it
An 18 year old is an adult and it is up to them.
no because she or he is to young for a 18 year old boyfriend or gilfriend.
eww, no
There are no laws about dating.
There is no reason why a 15-year-old shouldn't hang out with an 18-year-old as just friends.
You are both single adults and do as you wish.
Yes. An 18 year old is a legal adult in every jurisdiction, so far as I know. Therefore, an 18 year old could date a 99 year old legally.
yes it is
There are no laws about dating ! As long as that is all it is and nothing sexual involved.
No because you can go to jail for that because he is older then the age of 18 and you are younger then the age of 18
Yes your both considered adult age