This anime scene is completely filler and non-canon. In the manga, Gray was never seen chasing Lucy to check on her. He was always her father.

Filler vs. Canon In canon, Gray didn't blush when he saw Lucy dressed up; he didn't care. Mashima was never a fan of Graylu; only the animators were.

@GrayLuIsTheBest ami 🧡 My dear Lucy is also abusive only to Natsu, since he is the boy she loves very much 🤭

Hi Elon Musk, there's a girl with multiple accounts harassing several people on Twitter. Could you take steps to protect the privacy of all those people? She also harassed a minor with sexual advances.

jajajjaajjajajajajaja, then Graylu fans if they don't like Nicole Travis are not true fans of the ship.

Toxic and forced ship

Even if you put a sack of potatoes on Lucy, she'll still be as beautiful as Marilyn Monroe.

Let's be honest, Graylu isn't a healthy relationship. It lacks development and chemistry. Lucy has been aggressive toward Gray on several occasions. They're a toxic and forced couple. They both agree that they're repulsed by being together. #antiGraylu #Lucyhearfilia

Lucy doesn't like Gray, look at the difference, Lucy is the happiest woman next to Natsu

I hate Graylu, it's a forced and toxic couple where the abuse is evident, I'm glad that both characters agree that it disgusts them to see themselves as a couple.

In this scene Gray didn't even care about Lucy's appearance, he was never attracted to her.

Graylu is toxic! ⚠️

Graylu fans are stubborn, they have a hard time accepting that Gray was never interested in Lucy and they keep clinging to the anime dialogue when it's poorly translated, Gray was never romantically interested in Lucy, don't be stubborn. #AntiGraylu

Manga -Gray didn't say he was in love with Lucy. -He never blushed when he saw her dressed in the celestial gown and ignored her. -He never followed her because he was worried about her. #AntiGraylu #lucyheartfilia #Grayfullbuster

Remember, this isn’t canon / it’s not written by Mashima. It’s all just a FANTASY couples section made for fun and laughs. Gajeel is there too. Gajeel x Lucy forever! #AntiGraylu #lucyhearfilia #Grayfullbuster

Anime. Manga #antigraylu

Also Graylu