I searched this morning for communities related to polyamory and open relationships. Finding nothing, I created something. If you are interested in polyamory, open relationships, ethical non-monogamy, etc, swing on by for a chat, to post something silly, as you will.
polyamory is an alternative to monogamy, so if you think a community about monogamous relationships should be NSFW then I guess, but I think that might be a stretch.
There are many aspects to polylove, including sex, but not solely sex. There's a bit of a distinction between "swinging" which is more about the sex and less about the relationships. And polyamory which is more about the relationships less about the sex. I mean if that makes sense? But yeah, search the interwebs and there's a site for any kind of sex you can imagine, and for all the ones you never thought of, nor perhaps wished to think of. (sorry for ending in a preposition, I may need caffeine)
Polyamory is about multiple relationships. The amory part means love. So while sex is a part of it it's not the focus. See it as a relationship advice community.