I too don't think its you. If you don't like hearing it, you don't like hearing it. That may change but for now it sounds like having a discussion letting them know that you would appreciate it if they could keep the sex for times when you aren't next door or when you aren't there you'd appreciate it because it totally bugs you right now. Sounds like a reasonable request to me. If its not possible then requesting that you all work on ways to work around it would be my next request.
I'm not sure why it has become an issue in your mind. Perhaps if you take the stimulus out of the equation you will figure out why and be able to work on that. If in fact there is a reason.
Personally I would not like that and that is that. I don't feel I have an issue to work on, I just don't want to hear others have sex. End of story, full stop. You don't have to have a reason either.
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