hii! ^_^ you have to accept Load feelings and then after the loop you gotta start the game again, rejecting Load and trying a new route. i must say that i don’t think it’s possible to have a happy ending with someone who is not Load! you can try choosing someone else but he will stop you.
I got to the confinement section and read a bunch of days you spend with load then while that was open opened a new game load will ask you questions about himself based on those days if you answer them all correctly you get the true end and can choose
I have no idea i was delirious bc it was like 12 atp but you don't have to do all of them you just have to open a new game with the current one open and he will ask you the questions each load has different preferences so its up to you to answer right