I am continuing to build a bit more with the building @Princess Spooky Suki theory. What if Harlequin and Pierrot were besties but they both loved columbia. Harlequin had no worries with them both having that same lover (bc ofc he knew) but knew Pierrot would not be happy, so he kept it to himself. Columbia chooses Pierrot and then Harlequin + the others see who Columbia actually is(A.K.A only wanting to live). Harlequin trues to tell Pierrot but he dismisses it. Harlequin then grows a hatred for Columbia and Pierrot bc Pierrot doesn't belive him. You all know what happens then...
True, I just kinda use my mind before actually thinking of how they actually are at times when i've had speculations! I'm really bad at just keeping it in line and not breaking any stuff so it can't be canon! Thanks for pointing that out! And a lot on the other speculations i've thought about @cookieandcreaaam!