My boyfriend had sex with his step sister then tells me its ok?

Ok so my bf told me he had sex with his step sister and tells me it's all ok? He's like "we are not related by blood it's just her mother married my dad" G&G is this incest type behavior or its ok in your opinion. I don't know what the fuck is wrong with my bf anyway share your thoughts Thanks
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Most Helpful Girls

  • If I am in your situation, I would break him right away if he does sex to other girl (family related or not) because sex for me must be done with feelings (intimate romantic between lover or couple).. now if he does that while in relt'p, I percieve it as something he has feelings with that girl and its insulting to me... if he said its just "sex" and nothing beyond that, no feelings or anything intimate, then I would feel he will does the same thing with me since he don't value sex as something meaningful...

    I believe some guys do sex as something its their way to increase their self esteem or ego.. if they score more to girls, the better they feel to themselves (without being aware of their partner's feelings)... and for me, that is not a real strong man.. They are weak as they are selfish and lack self-control... and they don't tend to be loyal to their loved one... Not all guys... And this applies to opposite gender too I guess...

  • I'm taking he had sex with her before he was your boyfriend.

    Technically, it's not actual incest. But yes, it is incestuous because of their family ties. With the act itself I see no real issue, but what I find alarming is how deals with it. He must be aware that it is a social taboo and that he can't expect people to react relaxed about it. The fact that he told you this like it would be no big deal to you, makes him seem to me like he is somewhat lacking competence in the social department.

    One thing I'd like to add - all I said was under the assumption they grew up together for the most part at least. If they actually became step-siblings only when they were in puberty already by the time, or even older, then I really think this should be no big deal. It may seem weird, yes. But there's nothing wrong with it, if you think about it.

  • Before judging, things sometimes happen when people are young and immature. When I was 16, I had a huge crush on my older step-brother. He moved back into our house while he was going to college. I would hang out down there in the basement with him and listen to music. We ended up having sex. I knew it was considered wrong and I would get into trouble but I was infatuated. I started sneaking down there at night to have sex regularly. It went on for a couple of months and then I thought I was pregnant by him. Turns out I wasn’t but it scared him into moving out and breaking it off, which was for the best. I can’t believe now that I did that so you can’t always hold things against people without knowing the circumstances.

  • I had sex with one of my step-brothers.

    It really depends on the situation.

    In my case, we'd had sex the first time, before we ever even knew our parents were seeing each other.

    Now, in your case, is he having sex with her while dating you? or before you started dating?

    • Before we were together

    • Then, she was just another girl he fucked. Look at it that way. It isn't incest. Now, if him living with her makes you worry about him cheating, that I can understand, and that is a different issue.

    • He wanted to spend Christmas with his family this year. Of course she will be there.. Now I don't know if he will Cheat on me in this case, but I still get anxiety about it

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Most Helpful Guys

  • While it isn't incest (because they were not blood relation), it obviously is frowned upon and against "decorum" in society.

    But... much also depends on the situation. If, say, this guy's dad had dated a bunch of women without getting serious with any of them, then he would not have any real "family dynamic" with any of those women, and meeting the daughter of one of them wouldn't have been any different than meeting any other girl, even if her mother eventually DID get serious with his father and got married. It would be FAR more questionable if the parents had gotten into a serious relationship and/or married long before the sex happened between the kids.

  • When did their parents get married? How old where the 'kids'?
    If they were late teens, perhaps never lived together... you can see that it's not really crossing any of the big taboo lines. They simply dont see eachother as siblings (and arnt except legally), and probably never will at that point.
    Never the less it's a bit... icky. As a knee jerk reaction.

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What Girls & Guys Said

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  • he's right, no blook relation means no incest.

    however, the idea is creepy, just like in the movie Clueless. anyone else notice that it's the same thing? just that they are "un-step siblings." still gives me the willies.

  • It's not incest because they're not bloodrelated and it really depends the relationship they have. But that doesn't even matter here, they guy cheated on you!! What are you waiting for? Dump him!

  • Lol have you watched the movie Clueless? It happened there too

    • No I haven't watched clueless..

    • Hey maybe I should watch it with my boyfriend lol now that would be awkward

  • Biologically it's ok, and NOT considered incest.

    Romantically it is not ok. He's cheating after all (at least if it happened while you two were together)

    • No we were not together at the time it happened

    • Then you got nothing to blame him for. Step siblings are never genetically/biologically related, so there is no reason to react to it as long as both concent to it and are old enough. It might sound... weird... but he haven't done anything wrong at all.

  • Um... did he do that while you two were together? cause then that's another issue...
    I would say it sounds like he has boundary issues. I know they're not technically related, but it's still sex with a family member... I can't really think of a situation in which it would be 'normal'... unless their parents got married AFTER. ... therapy?

    • No we were not together at the time I agree my bf needs serious therapy

  • It's a little odd for many but as long as he wasn't cheating on you I wouldn't be all that worried about it. It does go on in a lot of situations.

  • I think it is technically OK. but I'm with you 'I don't know what the fuck is wrong with my bf?'

    Lots of reading out there.

    www.google.com/

    Good luck figuring it out!

  • It's not actually incestuous, because they're not blood relatives.
    In that case, it doesn't matter who their parents are married to.

  • it's odd and not something I'd do. a bit taboo and sexually deviant, but not illegal or genetically perilous.

  • while you two were together? that would be fucked up.
    but if he did it before you met... they are not blood relatives. If they are consenting adults then there is nothing wrong with it.
    even if they were blood related the taboo is with society. If they are fine with it then more power to them.

  • it's not incest.
    they weren't related by blood. it also depends on what kind of bond they have. if they had a strong sibling bond then you have every right to be disgusted, but if not, then just consider her another girl.

    • do you know whats the most fucked up part? He is very close with his step sister he always makes time to talk to her on the phone.. o. O

    • well i heard that a lot of guys fantasise having sex with their older sisters... i guess he just made it reality. if i were you i'd break it off with him

    • Maybe I should break up with him.. Ugh why do I always get with fucked up guys? lol

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  • It really all depends on when they became step-siblings. Granted, it's still wrong and will cause a shit-storm if they get caught, but not necessarily incest.

    • I just think its gross I can't even look at my boyfriend the same way even if they were not related by blood it's disgusting

    • Yeah, it is.

  • and you're still calling him your bf?

  • Even if they are not blood-related, YOU are his GIRLFRIEND aka what he did was *cheating* which is not okay.

    • I think she was implying that it was before they got together

    • Oh. If it was beforehand then it really isn't incest, so eh. It's like dating someone who lives in your house.

    • @madhatters4

  • It depends on when they had sex like before or after their parents were married. He did cheat on you so that was wrong too. So yeah its not okay blood or not.

  • Technically its not incest, but if they grew up together from an early age and he refers to her as his sister, then its still not incest. Its just messed up situation

  • Oh keep it in the family, still, they're supposed to be a 'family'. I wonder if he had sex with his step aunt too.

  • If they're not blood related then it's not incest. The only thing that makes it wrong is the piece of paper that said their parents are married and that's not worth anything at all in the grand scheme of things.

  • It not incest, nor illegal in many countries. Morally it's wrong in any cases, but who's talking morals in our day and age.

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