Hello everyone, I need some help please,
I am a heterosexual female in a relationship with a heterosexual male who has a lesbian friend he calls his sister. She is the younger sister of his ex girlfriend.
They say they are brother and sister but she sends him nude photos of women she finds attractive, tells him in detail about her sex life, they talk in private on the phone, he sends her pretty much everything he sends me on the phone (daily life activities) he texts her not me when he goes out on the town (updates about his night) she has nude lesbian photos on the tv on slide show when she visits from out of town and he told me never to come between them.
The day I met her she told me how she got a girl to squirt. I told my boyfriend after meeting her that I didn't think that was the most appropriate conversation as it was intimate but I said it truly not being judgemental. I personally don't feel the need to share sexual details with others. He told her what I said and she has been nasty to me ever since and he was really mean and angry at me.
He says she's only interested in women but she will have a threesome (2 girls, one boy) to get sex with another girl.
If I say my feelings that I'm uncomfortable about it, as I have done before he gets wild at me. One time I got really drunk and texted him that they should just go ahead and f..k each other again (though I have no idea whether they have) as I was getting insecure and emotional about them. He said, how dare I accuse him of having sex with his sister.
He has asked me to marry him and I have kept my mouth shut about my feelings regarding the two of them, since the first time I said anything (if I say anything then he shuts me down and I don't get any updates about her, even that they have spoken on the phone)
I can't work out whether I'm wrong to feel threatened by their relationship. I always consider how the other person feels because I genuinely want to understand how and what is going on.