[LisaW1991]

I live in an appartment next door to nice guy who's going to college. He has lived there for almost a year. Friendly guy who is single. He doesn't appear to have steady GF, but he does bring home girls occasionally and has sex. The walls are pretty thin, and I can hear them having sex. One girl that has been there several times has been his sister, and everytime she stays the weekend, its clear they have sex several times. I've met her and talked to her down at the pool, and they seem like an affectionate couple when are out in public, but he always introduces her to everyone as his sister.

Its really none of my business so I have not said anything to him about hearing them have sex through the wall, but sometimes I wonder if I should just so he knows. I've not said anything because hearing others have sex does not bother me, and I don't want make him feel he needs to hold back.

[jns]

Is this a blood sister or otherwise? Sometimes sister and brother mean a close friend or someone you grew up with. It is also possible that they are not blood related, but related through marriage of their parents.

[LisaW1991]

I don't know if they are blood related. She did come with his parents to visit once. They kinda look a like a little, but I don't know if that just me looking for anything that's similar, like they laugh the same way, and they both have green eyes. Sometimes I think they act like brother-sister, then other times it seems like they act like couple. My sister thinks they are blood related, but I think she seeing similarities that I think aren't really there or too common, like she thinks they have the same nose, but I don't agree. Besides, I have seen couples who aren't blood related that look almost like twins.

Yeah, it could be possible they are related by marriage. I really don't know much about their background. We're just neighbors, not very close friends. We've only chatted a few times in passing or when hanging out at the pool. Its kinda strange to feel like I know more about his sex life from what I hear through the walls, than I do about him as a person. And, from comes through the wall, I am surprised he doesn't have a steady GF because he is a nice guy and obviously women have a good time when they spend the night.

[lissy73]

Why don't you just ask him straight up? Say something like is that your sister, friend, girlfriend etc. cause I have a friend and he has seen her around, and would like to know if she's single etc. Or make friends with her, ask her subtle questions as well.

I think we are all dying to know as well lol

[LisaW1991]

Why don't you just ask him straight up? Say something like is that your sister, friend, girlfriend etc. cause I have a friend and he has seen her around, and would like to know if she's single etc. Or make friends with her, ask her subtle questions as well.

I think we are all dying to know as well lol

He has introduce her has his sister, so there is no speculating about that. They even have the same last name. He just doesn't know my sister and I can hear them having sex when she spends the weekend.

We had not seen her for a while, but she spent last weekend with him, and well, here was some intense bedroom activity occurring while she was here.

[CHANDLERS WISH]

She may be his step sister, adopted even.

But my thoughts honestly are, they are doing no harm to anyone else, it's not my business.

I would not bother other than the curiosity... It would be none of my business ...

(Edit) Off course unless there is under age involved. Which it doesn't sound as if there is.

[Stillness]

My first real girlfriend was my "cousin." She's related to my stepfather. We never introduced each other as cousins though. I have to admit that even that was a little weird and we probably would have been legal even if he had been my natural father because they were very close, but not by blood.

[rcoreyus]

Incest is only a physical risk if people have children. It is still one of the last remaining great sexual taboos in most societies, but that is probably based on the genetic issues if children are involved. I suspect that like many other sexual taboos it will gradually go away.

If he has introduced her as his sister, that is how you should treat her, and assume nothing sexual about their relationship unless he mentions it.

If his nighttime activities are bothering you, then you can politely mention to him that the walls are thin and sometimes you can hear the "TV" at night and it keeps you awake. (yes he knows, you know, and he knows that you know, but it avoids some awkwardness). Otherwise if it doesn't bother you, then no need to mention it.

[caster]

My first real girlfriend was my "cousin." She's related to my stepfather. We never introduced each other as cousins though. I have to admit that even that was a little weird and we probably would have been legal even if he had been my natural father because they were very close, but not by blood.

Around here that's not considered weird, that's considered normal... in fact she'd be considered an outsider...

For the OP, other than the curiosity I'd be more bothered by hearing sex all the time through the walls. I'd tell him, as a neighbor, that you can hear quite a bit more than you'd care to and that he's probably aware of, and leave it at that.

[LisaW1991]

Incest is only a physical risk if people have children. It is still one of the last remaining great sexual taboos in most societies, but that is probably based on the genetic issues if children are involved. I suspect that like many other sexual taboos it will gradually go away.

If he has introduced her as his sister, that is how you should treat her, and assume nothing sexual about their relationship unless he mentions it.

If his nighttime activities are bothering you, then you can politely mention to him that the walls are thin and sometimes you can hear the "TV" at night and it keeps you awake. (yes he knows, you know, and he knows that you know, but it avoids some awkwardness). Otherwise if it doesn't bother you, then no need to mention it.

I am OK with hearing them have sex, it does not bother me. I hear my sister every time she brings a guy home. It pretty normal around here. Given the nature of their relationship, I'm speculating that they don't intend others to know they are have sex. Probably best not to say anything unless he some how brings the topic up, like having sex with other girls he brings home, I might say something like I've heard the girls having a good time at night. He could make any further deductions.

I try not to be judgemental about such choices if is a mutual choice\attraction. When I was 14 I had sexual encounter with a cousin who was 16. I was already sexual active, but he had never had sex before. One evening we were alone together and began engaging in foreplay that led to us having sex.