sometimes. it does depend on what your doing. if your kissing and dry humping it is a little over the top. if your just feeling each other with clothes on and not doing any sexual aportches it's okay. but if your finguring or makeing out, that's inbread and should be steared clear of.
no
Real sister, half sister, or step sister
sister in law.
Your sister's sister is your sister.
no
Because she was born that way.
No relation whatsoever. You will be an aunt or uncle to your sister's child and your brother-in-law's sister will be the child's aunt, but that's as close as it gets.
Type your answer here... lesbian lover
they like girls
let her do what she wants with her life
Your mothers sister is your Aunt
There is no relation. Your not blood at all so your just really good friends.