I've been in open relationships in the past, but when I met my current partner, I suppose I just knew I'd met someone I actually didn't want to share. It's not about owning a person; it's about finding the right person for you – and you just go, "Ah, this makes sense."
Since the past few month I'm very curious about open relationship. Remembering the few polyamourous people I talked to , the paragraph above seems to make a lot of sense. Plus it confirm my actual bias.. so...