i can just share what i did with my husband when it come to the whole poly thing. We were fans of the show Big Love and i asked him what his thoughts on a lifestyle like that was... being the awesome husband he is said he didn't feel it was fair for the women to only have 1 man to share. we also discussed how was poly any different then the "single" guy down the road with 3 baby mommas that he's still seeing all of.
We also watched a few other poly shows and discussed the pros and cons of it before we started anything. even now joke he's more mono then poly as he's gotten a lot of woman who are looking for "the one". I know before my 1st date with another man i asked him if he was okay with everything about 50 times and continued to ask afterwards.
hope that can help..