Sharing the weird reasons for a fight

I just need to share this somewhere. I have a lot of Amnesia from that relationship still but i start to reclaim my memories and this one popped Up.

Late into the relationship there was one Situation where i wanted to go to the Gym in the morning of a day she wanted to come over. At this Point i had to discuss such Things with her, or else she wouldnt feel excluded and start a fight. So i told her that i would Go to the Gym in the morning and we could meet after that so around late morning early noon. Like i Go at 10 so we can meet at 12. She told me thats Not OK for her because this would Take to much of our time together away. So i didn't Go and waited until she comes over. She ends up taking longer to do her stuff and ends up coming over in the evening. I Don't say anything about me having to plan every minute with her and her Just doing what ever she Likes, turning Up 10-12 hours later then planned. I Just didn't have the strength to fight. She Starts a fight anyways. I try to sooth her and find a solution to her starting the fight. I can't even remember about what it was. Me trying to resolve Things makes her even more angry and she tells me:

"you only want to resolve this fight because you don't want to fight with me, Not because you want me to be Happy".

I Tell her that i want both, i want her to be Happy and to resolve this fight, but it doesnt help. She stays made at me and i have a sleepless night after that.

I Hope more of these memories come Back to me. Just a situation where you can only lose. This all seems so weird and foreign when i look Back at that.