incest seduction

[Yerkiddin]

I normally try to type gender-neutral, but for this one, I think it works more likely with the genders selected.

A man that is not inclined to incest does have at least 1 attractive female relative that is attracted to both him and his girlfriend. The girlfriend in question is bi, and the female relative seduces her first, and then gets her to suggest a 3some without telling her bf who the second woman will be.

For this next bit, there are many ways this could happen, this is just one:
The two begin a sexual evening as a couple, and the girlfriend gets him to lie on his back, and mounts his face. As he is giving the girlfriend oral, the female relative enters and mounts his cock. He doesn't even find out until he has cum at least once who was mounting his cock.

It could be entirely innocent, too. The gf could have met a relative that was divorce, but still using her ex husband's name. This could be taking place at the gf's apartment, such that neither relative knows the other before one or more orgasms have happened. Maybe the gf has had a relationship with both the related folks for a while, and been dying to introduce them for 3somes.

 

[sirhugs]

Does he know his gf is bi?

 

[Yerkiddin]

I would think she might have already suggested FMF 3some to him, so yes.

 

[Lost_Yonder]

what's the actual incestual relationship? sister, cousin, aunt, niece??? That might matter - a cousin one might be more accepting of than one's own sister. Too many factors though to still work through - like the nature of the pre-existing relationship between the two committing incest? why the gf is willing to help them commit incest?

And then you have the response - what if the guy is totally upset and pissed? breaks up with his gf. but then after some reflection, perhaps finally meeting with his female relative he had sex with, he begins to see that it isn't so bad. Or perhaps he ends up leaving his gf for his relative. or the gf leaves him for her. or do they create a poly-family? or is it just a one-time thing that the female relative wanted to experience - a long time fantasy?

Certainly an intriguing storyline with lots of possibilities...

 

[Yerkiddin]

As I envisioned this, it's basically a guy with a bi gf that wants a 3some. He doesn't know it's a relative until he's already had sex for the first time. Depending on the relation between the two, yes, it could be more or less acceptable to all involved. I'm not writing this, just offering it up as an idea.

As I envisioned it, it would be the bi gf, who does not know of the blood relation, that has been enjoying a sex relationship with both parties that wants to set this up. It's only after everyone is laying back, exhausted, semi-snuggling that introductions happen, since the sex position they started with had the gf sitting on the guy's face and the relative joining by straddling his waist (cowgirl or reverse cowgirl)

I would not expect the relative to be his mother, but his sister could be a possibility. (I have two sisters, and to my knowledge, neither ever saw me naked, just as an example of how that could happen)

As I see it, the biggest question is, what happens after they find out?

 

[Carnevil9]

Does he know his gf is bi?

It can happen. I had a girlfriend in college who claimed to be bi. I didn't quite believe it, so we kept dating as if everything was normal. Nothing ever happened and eventually we both graduated and never saw each other again. But I could easily see a similar couple dating for several years, and then suddenly WHAM the dude finds his GF fucking another woman.

 

[Yerkiddin]

The realization of incest could happen even later, if it were a cousin. I have cousins I haven't seen for decades, as an example, and my extended family is still rather close. I can well imagine a family with siblings that weren't on speaking terms, and kids from them not realizing they both were dating the same bi woman until, after several 3somes at the bi gf's house, they finally meet at the house of either relative, and the visiting one sees pictures of someone they know on the wall, or something.

"I know this house! That was Grandma's house, when I was a kid, and that's my father!"

"It can't be, that's my uncle... Oh."

 

[LupusDei]

"I know this house! That was Grandma's house, when I was a kid, and that's my father!"

"It can't be, that's my uncle... Oh."

That's more like it, but it takes the salt out of the initial scene. And cousins, especially not well known, aren't all that incestuous, except perhaps legally and even then not everywhere.

A sister...

I totally get the guy being clueless and agreeing to a threesome with a stranger, but for me, it's hard sell for the other girl to be likely blindly going into it. She is, far more likely, going for it knowingly. The gf could be still clueless too though. It could be the relative who, while dating gf, figured out who gf's guy is, and for whatever reason decided to try this. She might even be instigator of the whole scene, and may attempt to direct it so the guy is not supposed to find out, perhaps unsuccessfully, perhaps successfully -- in that case the big reveal happens the second time, begged for by the guy, and eagerly accepted by gf, but the relative is hard to convince for the repeat, not because she didn't enjoy it, but because she fears discovery.

 

[UsuallyPresent]

That's more like it, but it takes the salt out of the initial scene. And cousins, especially not well known, aren't all that incestuous, except perhaps legally and even then not everywhere.

A sister...

I totally get the guy being clueless and agreeing to a threesome with a stranger, but for me, it's hard sell for the other girl to be likely blindly going into it. She is, far more likely, going for it knowingly. The gf could be still clueless too though. It could be the relative who, while dating gf, figured out who gf's guy is, and for whatever reason decided to try this. She might even be instigator of the whole scene, and may attempt to direct it so the guy is not supposed to find out, perhaps unsuccessfully, perhaps successfully -- in that case the big reveal happens the second time, begged for by the guy, and eagerly accepted by gf, but the relative is hard to convince for the repeat, not because she didn't enjoy it, but because she fears discovery.

Think adoption & separation at an early age. Luke fucking Leia, or Vader molesting the princess...