Jealousy in multiple partner relationships

I've got a new menage release today, and it got me to wondering: what are the chances of having a multiple-partnership relationship, whether it has a BDSM aspect or not, without jealousy getting in the way?

Men, it seems, have more of a tendency to be outwardly jealous. Women seem to keep it inside, but men tend to show more obvious signs of jealousy and possessiveness. So what happens when these signs show up in a multiple-partner relationship? And do you think people who engage in permanent menage relationships or BDSM relationships are better equipped to handle these jealousy issues?

Here's my thought: in any multiple-partner relationship, each person is aware they will be sharing or being shared. One would hope the people doing the sharing would talk beforehand, acknowledge that they won't always have 100% of the sharee's attention, and come to terms with it. Undoubtedly, though, that doesn't always happen.

Personally, there's no way I would enter into a multiple-partner relationship without talking about this issue. I can imagine it's one of the things that could tear apart the relationship forever, and it shouldn't be ignored.

What are your thoughts on jealousy in a multiple-partner relationship?

If you're interested in my new release, here's the blurb:

Luc, Carter, and Jake make up the Buffalo Intimidators' top scoring line and play together both on and off the ice, with a history of sharing women. Each of them is also a client of massage therapist Eva. When they decide they want to be more than just clients, they approach her about having a ménage a quatre.

Eva's been secretly lusting after the guys for months, but was afraid to say anything in an attempt to keep her relationship with the guys on a strictly professional level. Besides, how could she pick just one when such mouthwatering displays of masculinity are spread out on her massage table every day? She agrees to the ménage, but when serious health problems begin to plague members of the team, will she want more than a quick score with her hockey boys?

And the lovely cover: