How do I find an incest partner?

I'm an 18 year old guy who is deeply interested in incest. I'm happily single and I have 4 siblings (2 older sisters and 2 younger sisters) and I've always wondered what it would be like to engage with them sexually. I never knew how, or felt comfortable, in approaching any of them to express how I feel. I've also been too afraid of the consequences and social implications, so I've always kept my feelings to myself.<br><br>Things got a bit more complicated when my dad had an affair with a woman and had a kid with her. I am now aware that I also have a younger half-sister who is now an adult and I'm wondering if she would be more approachable to talk to than my other siblings.<br><br>So, I'm curious to know if anyone here knows how I should approach her or any of my siblings about how I feel. Or if anyone has had any personal experiences like mine and know how to go about it.<br><br>Thanks.