Originally Posted by Purpurea
would you REALLY feel that this person is equally close to your partner, .
No I wouldn't. But the nature of the relationship would change IF
it was believed that my partner was also internally monogamous from the beginning. I've experienced this and it stayed with me. Ultimately I was no longer as connected to my partner.
Knowingly Being with a poly partner is different however...once you develop some understanding of how the person loves people.