There are plenty of people in poly-relationships.

I think its possible to love more than one person and to have more than one partner. You have to be a special type of person who doesn't get jealous easily.

It all depends on the person really. I know I couldn't stand thinking about my boyfriend with another but we've built our relationship on the premises of monogamy. If you're looking for a poly relationship, you have to make sure all partners involved are okay with it and you don't create distrust. Just like a relationship with one person.