Threesome research - seriously, and proper published too.

Just for curiosity and discussion if anyone wants; I've just discovered this exists - far better than the usual media rubbish about threesomes, swinging, etc.

and 

For some reason the website links got deleted. I can't think why, as they are not any form of competition to KS, or advertising or anything.

Ok, maybe bots are deleting the web addresses? I can't see any reason a human would.

First one can be found by searching 'ryan coats phd'

second one by 'bbc 69326cfe-2511-4905-a43b-4f22c6f14c37'