Sexual Health
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What's worse: sleeping with your first cousin or sleeping with your step-sibling?

I'm having a dispute with my friend. I think it's worse sleeping with your cousin because you're related by blood. She thinks its worse to sleep with a step sibling that you've known since you were young.
Cousin
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Step-sibling
Vote B
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The ones voting for the siblings. Would you change your opinion if they grew up in a separate household? For instance, they live with their mother and you live with their father, your step father?The only familial interactions you share would be during holidays. the cultural argument for sleeping with cousins doesn't have much weight since back in the day they didn't have access to the same scientific research about genetics that we've only recently learned in the past few hundred year
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Most Helpful Guys

  • Growing up with them, would make it easier to do it.
    As in, what is the difference between having a fuckbuddy or a step-sibling if you did no grow up with them? When you have start having sex, then what happens when either is finding some other person that they fall in love with? Jealousy.
    But if you grow up together, you get a different bond. And the other person can still fall in love with someone, without you two breaking that bond. As it is not a couples-bond but a step-siblings-bond.
    You can stay good step-siblings, even when the other gets a girl/boy-friend.
    And whenever time and mood is fitting you can still fuck your step-sibling as well.
    With a step-sibling that grew up together, you can have sex, and know that both of you know it is just about the sex, and not about any emotions.
    With a real-sibling or cousins, there is always they feeling of taboo behind it, You are not supposed to do it, and for a good biologic reason.
    With step-siblings, they is only this taboo because of moral standards. Moral standards that you might not agree with.

  • Many here have said sleeping with a step-sibling would be worse because you grew up together. And even with the blood relation, sleeping with a cousin would be okay if you did not grow up together. Using that logic, imagine siblings being separated near birth (divorce, adoption, whatever). If you were to meet later and feel attraction, using the logic of having not grown up together, it would be fine to sleep with them. Sorry, but that is creepy to me. There is something special about blood relations, both genetically, and emotionally.

Most Helpful Girls

  • Hmm...I'd say the step-sibling assuming you grew up with them in the same house. My reasoning is throughout history and still today in many cultures marriage between first cousins is actually encouraged. From a western perspective its weird, but it happens a lot and that's actually far enough apart genetically, that genetic defects are pretty rare between the children of first cousins. As for the step-siblings growing up together, studies have actually shown that the people we share a home with when we are growing up(siblings/step-siblings/cousins/adopted siblings/whatever) are not sexually attractive to us (generally of course). There is some switch in our brains that tell us that these people are not viable partners for us to reproduce with regardless of genetic relations with that person. So I think its worse sleeping with a sibling even if you aren't technically related to them if you grew up together.

    Of course my opinion would change slightly if the step-siblings were introduced as teenagers or something. But both are nasty as f*** in my opinion...

    • @update: link genetic defects really aren't that likely in first-cousin relationships...unless your parents were identical twins you won't be that genetically close to cousin

  • I agree with your friend. It's worse to sleep with your step sibling. Cousin may be blood related, but it's not like you grew up together... And your parents aren't married. Imagine marrying your step sibling, your mother/father-in-law is actually your parent. Now that's plain weird.

    Plus, many cultures accept cousin relationships.

    So, I think your friend is doing the good thinking. Step sibling is literally like an actual sibling, but cousin is just another person you know.

  • Sleeping with a cousin could cause mental and physical problems if she was to get pregnant, but a step sibling has no blood relationship.

    • in fairness, the mental/physical problems are not likely to occur unless it was generations and generations of inbreeding. The defects don't come out (or so unlikely to come out) after one generation of inbreeding. Not that it's right, it's still gross as hell >.> but ya, if you had to go with some kinda incest, step sibling is the less gross one.

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What Girls & Guys Said

9 5

  • YIKES- they are both bad! may I suggest cruising for some ass pretty much anywhere that ISN'T a family reunion?

    • @update- yeah, it helps if you didn't grow up with them. But I have friends who are not related to me in any way that I watched grow up, and I literally am unable to think of them as sexual beings. One kid-I met him when he was 13-has kids of his own now and I'm only like 6 years older than he is. But when I look at him all I see is that wormy, grimy kid he was when he was 13. He looks NOTHING like that now- he has become extremely good-looking and he's an adult. It doesn't matter. He's a no-go.

  • Cousin.

  • Cousin is worse. Step siblings have no blood relation, but both are kind of weird

  • cousin obviously. No blood relation to step sibling. Actually I'll go one step furhter and say that it is PERFECTLY ACCEPTABLE to sleep with step-sibling.

  • good question, I had to take a minute to think about it.

    i think it depends on the situation, both are weird so we kind of have to ignore that if we are talking about a one nighter. in which case cousins is worse, you just slept with a blood family member at the end of the day.

    BUT can you imagine trying to explain a RELATIONSHIP with a stepsibling to your family? seriously? at least cousins are far enough away from your imediate family so that the wedding has 2 clear sides to it lol

  • Hmmm. Cousins are blood, but then again, they arnt really the "brotherly/sisterly figure" I think the Steps would be worse.

    • who would you choose to sleep with? don't say neither.

    • f***ing hell, humanbeing, that's a creepy as f*** question!

  • I say it's worse with your cousin again because of blood relations. The only thing sleeping with a step-sibling does is say f*** you to your parents' marriage, but there's no actual incest going on there. And what about childhood friends who've known each other for as long as they can remember and eventually end up getting together. I'm not saying it's the same thing, but it does meet the same argument, and most people end up thinking that it's a very sweet story.

  • cousin, your step sibling isn't technically related to you.

  • Your cousin is family, you have some common genes. A pregnancy might give (severe) trouble thus.

    With a step sibling you don't have common genes.

    However, sleeping with a step sibling can trouble the family because you probably live in the same house.

    I'd avoid both.

    Knowing each other since a long time isn't that important. You can know someone from your HS (or even college since the time you were together in pre school/kindergarten. That wouldn't be a big deal.

    • sleeping with a step sibling after you both left home and lived on your own would not be a drama, just a bit, huh, delicate...

  • Definitely your first cousin technically you aren't related to your step sibling

  • cousin

  • cousin obviously.

  • if you grew up with somebody as a relative it is equally as bad

  • this being purely hypothetical I've had a crush on a Cousin when I was younger (before I found out it was wrong) so if I had to pick I would say B worse to have sex with a sibling blood related or not than a cousin.

    on a side note I found out if it's a 3rd cousin there may be genettic benifits when it comes to breeding.

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