Only if her parents give her permission, or the sister has been awarded custody by a court (the only way that will happen is if the parents are proven to be unfit, and it takes A LOT to prove unfitness).
Yes, unless the 26 year old is an authoritative figure (ex. boss, teacher, etc). The age of consent is 16, but nobody under 18 may have a sexual relationship with an authoritative figure.
Yes, if the minors parents agrees to it. There are no laws for dating just for sex where the minor must have reached the age of consent in the state.
no
Yes
Of course.
no.
No
yes
No
Yes. An 18-year-old is an adult, and a 12-year-old is a minor.
How old are you?
There is nothing illegal with dating at this age as long as there is no sexual contact between the two. Look up age of consent in your state or country.
In Michigan, the legal age of consent is 16, so it is generally not illegal for a 17-year-old to date someone under the age of 17 as long as there is no sexual activity involved. However, there are still considerations related to maturity and emotional readiness for such relationships.
Sure you can.