I understand, your ship is also nice. I'll admit I am biased towards chaotic messy love geometry in stories, even if I enjoy 1:1 pairings too, but I think this one could be pretty interesting given the way the second iteration of the loop and protagonist memory loss complicates things. The contrast between Xi getting a second chance at everything and deciding to do the opposite of what she did before and Xinyue trying to re-establish the relationship from the previous loop could be a good source of narrative tension. Also technically not a triangle, more like