It would be all the same for my men. Me loving another person, female or male, would restrain the time I would have to offer greatly; none of them wants that to happen at the moment. It's all new for us still, maybe that is the main point in our case, but I don't think that it would make a huge difference if there would be a new woman in my life over a man along the way later on. It would always be a competion for time.
And I think they are right. A new love is a new love, regardless of the gender. In the mono-poly-plus-fidelity-case this means: Don't you dare push it beyond repair and my capacity to process things ^.^
Facts: 30, female, bi, v-type relationship with Sward (husband, straight, mono) and Lin (boyfriend, straight, mono), poly-fi and co-primary.