Their insane love for each other!!! But mostly their found family dynamic. There's something incredibly beautiful and uplifting to have these extremely broken people loving each other as they are instead of trying to change each other to fit what they want and want to see. Zool love each other and can love every fault, mistake, flaw, scar and crack they have in both body and soul and devote to each other fully, and that's what I think love it's about, loving each other no matter what