Aleister Crowley’s “Rights Of Man” states ( among other things) :
“Man has the right to love as he will
When, where and whom he will.”
There are no qualifiers or disclaimers included but as the terms “love” and “will” are included, most Thelemites interpret this an indicating that full consent of people who are free and of full age is implied. But there’s no limit on the numbers indicated
Here’s an interesting piece about the practical effects of pursuing a polyamorous lifestyle:
http://www.elle.com/life-love/news/a34511/polyamorous-relationship-with-my-husband/
