Marinette/Ladybug does indeed love chat noir. Marinette didn't even question Chat blanc when he said that they fell in love after they knew each other's identities. And I think thats the reason why Ladybug doesn't want to to find out his identity and vice versa. She believes finding out would lead to them falling in love and then the world ending. She must believe that if she did get to know Chat noir... she would fall in love with him
















