My little sister constantly says i'm hers

Hormones.

You've physically been away from her since she was 8, so you've missed a lot of her milestones. You're probably more of a nice older man she can talk to about anything, than a brother; which is probably why she's attracted to you and possessive. Plus, her parents keeping her sheltered is part of the problem too. You're probably her only outlet mentally and maybe sexually.

My suggestion would be to ask her if she has a boy at school she likes. If yes, have her talk about him and encourage her to date. If she gets creepy and tell you that she only has eyes for you or something, then you'll have to have a talk with her.

maybe your girlfriend got issues,, but so does your sister:p

Be careful of her feelings to though, assuming you want to continue having a good relationship with her. I was to rough on one of my siblings under the same circumstance and we haven’t spoken in over a year.

at 14 it's not normal. I used to say I'd marry my cousin, but I was 4...

Eww. That is some hella yucky talk.

Yeah, she's too possessive. She needs to realize that you have your own life.

Yeah, someone who insists that a sibling must not have a romantic or sexual relationship with someone else is just a teensy bit too possessive.

On the other hand, maybe she's seeing your girlfriend more clearly than you, and she really is a bitch.

This all sort of depends on your sister's personality. If she is normally reserved, evaluates carefully before making judgements, you would be wise to talk thru her rationale.

If she is an emo, and insecure about losing you, then you need to find her a boyfriend.

sounds like she has a crush on you , you rock her world . you could have her cherry if you wanted it.

She is possessive over you like a wife should be, maybe she wants your dick

Not sure how to vote.
You ask is it normal?
Her saying the stuff?
Or
You thinking she's to possessive?
I think she likes her brother, that's normal.
I think you're not normal for making an issue of it.

Nah it's fine. What's not fine is that she's insulting your girlfriend.

She probably want to have you all to herself, I'm not for pedophilia or incest ( to a certain point for incest) but she probably feels like you're more than that

Depends, she might just be teasing you. I think you might be reading too much into it.

It happens. Maybe she's being protective. When I was having problems with an ex and we weren't together, I dated other women here and there, and my hot older sister, whom I've always gotten along very well with, would ask questions, and if didn't like the answer, would say things like "So, she's not ME..I know what you like", or after meeting one, told me "You know I'm so much better than her".

Nice.

Nah! Not fine or in any sense normal for you but she is a kid so may be it's okay.

Does not sound normal to me. Unless your gf is toxic, which might explain her remark. Otherwise, she is too attached to you and this is not ok.

Nah, this is fine bro. It's pretty cute tbf

Not normal where I'm from.