There are of course still difficulties within polyamorous relationships…but they are dealing with it rather than denying it.

当然对于多角恋者来说，维持这种关系困难重重，但是他们一般都直面而不是回避遇到的问题。

youdao

The keys to a successful, happy polyamorous relationship are up-front consent and negotiation of ground rules and boundaries, say relationship counsellors, sex educators and polyamorous couples.

BBC: Is it possible to have a happy open marriage?

"Polyamorous relationships tend to be ongoing, sustainable, emotionally bonded, committed relationships with more than one person, with the knowledge and consent of everyone involved, " says Anita Wagner, who says she has been in polyamorous relationships on and off for the last 15 years.

BBC: Is it possible to have a happy open marriage?