I am high maintenance and I am demanding, and I do expect A Lot from my partner. but for a very long time I lived in this realm of half-coded half-messages, cryptic signals and unvoiced expectations, a spiderweb-like system of relations and emotions - a realm of my own creation - where I'd feel upset and abandoned if those needs were not correctly guessed, anticipated, decoded or fulfilled. and usually that'd only result in my alienating myself and hurting myself even more than it hurt others.
with my partner now I know that those Messages and Codes and Expectations have to be explained, sometimes twice, and in great detail, ideally with examples and data to back them up - initially even called out as they happen - and only after that is done I can reattach this value and emotion to them. if my partner misses those then, I have a right to be a upset. but they're not obvious or set as default, and not knowing them intrinsically isn't my partner's way of being purposefully hurtful.
sometimes I will tell my partner something and they won't have much of a reaction. and I learned that all it takes is just giving more explanation: what I'm saying now to you means that I am upset, the words and tone are both there to tell you that I'm upset, I'm upset because of XYZ, and I would like you to react, preferably by being there for me/hugging me/listening to me.
I used to think that was ridiculous. that it was debasing, that it was humiliating, that it was me begging to be acknowledged, begging to be loved. but in this case it isn't - I only had to do it twice, maybe three times in different situations, and since then they've learned my Messages and my Codes and my Meanings. and they love me so they do their best to follow them and act on them - and ask for guidance if they're not sure. and that's love, that's what love is to me.