I FREAKIN' LOVE IT!! I love this trope, they are so emotionally dependent on each other to the point that they manipulate and become possessive so the they will only have eyes for the other. It feels suffocating but at the same time euphoric, it's messed up but the amount of psychological impact that they have each other is just chef's I love it even more because it's FICTIONAL and the feelings are MUTUAL
Derail