There's a healthy and strong subset of polyamory called poly/mono: we acknowledge, love and respect our poly partners but don't generally become involved with other relationships ourselves. There are a few of us on this forum and more on the poly/mono group at yahoo groups. It sounds like at least for now this is where you fit. Things may change and you may find yourself opening up to being poly yourself but it sounds as if the feelings you are experiencing are the ones that monos go through in poly relationships.
Not everyone can come to terms with it but a lot can and do and enjoy really successful relationships.
Last edited by sage; 01-01-2011 at 01:56 AM.