Probably because if they did, it would make them the only target to Natsu's wrath. Even Gray never went for the scarf so that should be telling in its own right.

Natsu takes a big bit of his work and has to admit it beats eating charred eggs. Though he does think it could use a bit of a spicy kick to make it perfect.

"Hm? Well... There was that time when Cana challenged Erza. I don't know what got in her to do that. Probably changed her drink to something stronger that really messed with her head, I don't know." Natsu shudders just remembering the look Erza had.

"She never backs down from a challenge and back then the only drink she had was eggnog and win once when her mission involved going to some kind of party." He only heard the stories since before Lucy came around he'd never go to those shmancy fancy parties and especially not with Erza.

"After around the second bottle she started saying Master was a leprachaun and that she wanted her pot of gold now. She even went after Mira saying that was was an old bag because of her white hair.." Good thing this wasn't old Mira or the whole guild hall would have been destroyed.