It's not adviseable - incetuous activity can cause serious psychological damage to you and your sister.
compliment her boobs
My Sister's Keeper is rated PG-13. This is due to language and sexually.
Just be totally honest with him/her and ask her if you want to experiment with me.
Sometimes, if they are unsure of their orientation.
Yes it is, how else are you going to know what you like and/or want sexually as you go through life.
my question is how can i convince my brother in law to get my sister to mental health
No. You are only gay if you are sexually attracted to men, but not women.
Ask her - she can only say yes or no.
Yes.
it does happen. me and both my sisters did this. just touching, kissing, and orally.
prove/convince him that you're not a horndog bent on stripping his poor sister of her innocence.
Tell her that she could be infected