I have only recently discovered through my non-monogamous adventures that I am demisexual (demiromantic up for debate), now I am concerned I might need to actually be in love with others in order to have sexual interactions where I actually feel pleasure. My nesting partner is okay with the idea of this and and she encourages me to find love, here's where I am concerned though: I don't know how this could effect things, what if I fall for someone like I have fallen for her? She is my primary partner in terms of everything and I can never replace her (shes literally the reason our relationship even opened up in the first place), but my love is strong and I wouldn't want someone I really loved to be lower on the hierarchy if that makes sense??? I don't know how to tackle this in my mind

For context I've only been poly/nonmono since like a month or two ago