>>92089304You don't. Shippingtards (not talking about everyone who has a ship, just those who care about the ship more than the show) only care if their OTP is together, not how well written the show or the relationship is.
https://imgur.com/a/XKwJ4/allJust browse the Hall of Anal Devastation to see how toxic and hateful some people can get over a pairing.
For those of us invested in pairings but not obsessed, as long as you make it believable and not over some new trait that contradicts the character in order to kill the relationship (i.e. turning Jackie from an understanding nice girl to a controlling bitch), people who actually care about the story over the pairing will be fine.
>>92089519Because some girls are curvy. It makes her stand out. Also, she's the crush of one of the main characters, who has admitted he doesn't know much about her and put her on a pedestal, making her curvier and prettier than the other girls makes that kind of feeling more believable and relate-able