User blog comment:YoungOtakuNerd/Crossover Shipping?/@comment-4491833-20140609222308/@comment-4797970-20140610201359

I half-way figured.

Thanks to my Asperger's, I tend to pay more attention to little interesting details.

As for JohnnyxVelma: Unlike Marceline, who's only older chronologically, Johnny's also a physical and mental adult (well, the mental part is debatable). Velma's a teenager, so...yeah. Not to mention I'm more for Shelma (Shaggy and Velma).