Sexual Relationships 
Sexual Health My sister is doing threesome.. Should I tell this to my parents?
Anonymous
She is 23 years old. It is really difficult for a brother to know this. Do I need to tell this situation to my parents to prevent this situation? What do you think I should do?
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What Girls & Guys Said
28 55I... How did you even found out about this?
Anyway she is 23 so she can do whatever the hell she wants as long as it's not illegal.
Also don't say a word to your parents, it definitely doesn't concern them.
No you shouldn't it's her business and she's old enough to make her own choices, the most you should do is talk to her about it and find out why she does it (even tho it might be an awkward convo)
She's an adult... but maybe if it really worries you, talk to her about it
As a big brother, it's really hard to witness this.
Yeah, but ratting her out to your parents will make her listen to you even less. You want her to respect you, right? As her big brother? Then have a heart to heart. As awkward S it is
No? She's an adult, why would you want to interfere with her sex life? Just leave it alone
She's an adult and so are you, don't be a baby and let her have her fun.
Nothing. Mind your own business.
no. who is the third person. guy or girl.
Girl.
she's an adult. She can do what she likes. Stay out of her business
She is an adult. Don’t interfer with this.
This is nobody's business but your sister's. Keep it to yourself.
I understand it can be awkward for you but there doesn't seem to be an actual problem to bring up.
She's old enough to legally make her own decisions. It's not your place of your parents go control her sex life.
She's an adult. If the guys are not criminals then she'll probably be ok. If you're concerned talk to her about her safety. Only get your parents involved if she's doing something illegal or dangerous... IMHO...
Your sister is old enough to know what to do with her body, and she'll do as she pleases even if you try to meddle.
Think less... don't act much... if you wanna do something relax... or you can talk her...
Let it go dont think much buddy
Let her alone
She's an adult. Let her do what she wants.
Tell her to be more discrete next time.
Actually she is discreet. She was doing this in my summerhouse. I witnessed this without realizing it.
Dude, you are 25+ and she is well over 18. You guys are both past the age of tattle tales, grow up
None of your business.