Watching Her Make Love

I discovered polyamory when I was a senior year in high school but there was always a strong cultural taboo around it (I'm of Indian origin) which always piqued my curiosity more. A year after a failed relationship, I decided to join a local poly support group and then met and entered my first poly relationship (outside the group). We always talked about cuckolding and I found the idea quite exciting so we decided to see if one of her other partners might be interested. Watching her make love to another man, and knowing how deeply they cared for one another... I'm still not quite sure how to describe it.