That's what I thought myself too. It's always the character designs that get on my nerves. Every time you see a blonde haired and blue eye character they're always hooked up with some average looking guy with dark hair and eyes.
It's like people don't bother changing their appearance in the male character that they remain the same looking. Now, Marco and Jackie on the other hand, that's a different out look which I can see. But knowing the fans and the creator I know what to expect. Which is why anything I consider using of Star vs the Forces of Evil I tend to leave Marco out it, whether it is stories or fanart