Well, RGX first started off being extremely cocky, and he thought all pretty girls were fake behind the looks. When he heard LMC was popular and had rejected many boys, he wanted to "pull off her mask" as the super nice bento girl. He realized that he was wrong and that LMC was truly a passionate, caring girl. That changed a lot of his views on her and the world, and it was the first time he ever truly cared for someone after his dad died. LMC opened a door for him.