By popular request I'm gonna do Pink's relationship with the Diamonds. Disclaimer I own nothing.
White Diamond is the leader of Homeworld. She's the head Diamond. White Diamond is terrifyingly cold and calculated. I never really appreciated her reasons for being so emotionless. When a Gem, from a Pearl to a Diamond, is made it's for a purpose but I didn't understand mine. Yellow was in charge of the military, Blue was the diplomat, and White was the head. In order to help me learn my purpose in the Authority they took turns teaching me. White was the first teacher for me, I remember asking her hundreds of different questions each week I was with her and she answered them all but besides that we didn't really talk. I was content with life for a time but I wanted to know just what I was made for. After days of asking her White finally told me that she didn't make me with a specific purpose. I couldn't understand that, why would she not make me with a purpose? After that I decided to find my own purpose which I thought I found when I began to privately teach Pearl how to fight with a sword. I realized that Gems weren't bound to just what they were made for so I went to White Diamond with some plans to make a colony for Off Colors. Yellow seemed interested, Blue encouraged me to try, I went to her and told her what I wanted to do. White didn't think it was a good idea, she felt that we shouldn't waste our time with Off Colors. I didn't understand why she was saying no to this idea; didn't she want me to decide on my purpose? Blue decided that I wouldn't be visiting her anymore so I only really saw her during our meetings to pick a new colony. I don't think she ever acknowledged my existence during the meetings. Then she decided that I could have the Earth and I started the rebellion with the request that she not be involved. I told them that I didn't want her help but really I figured that White Diamond would either force me to destroy all life on the planet or take it for herself. I truly thought she would've been happy to be rid of me. Imagine my surprise when I see her symbol in the corruption blast. The ultimate Diamond attack technically only needs one Diamond; it was surprising enough that Blue and Yellow did it but White doing it was so surprising I almost forgot my shield. I guess in a way she did care, wish I knew that then.
One down, two to go then the epilogue