User blog comment:Bowser101/favorite P&F couples (WARNING: any wars and yer gonna get it!)/@comment-844113-20100221195312

Ferbnessa would be a slight possibility. Haven't we already seen her paired with Johnny? I know what you mean though, Femily makes a lot of sense. Phineas and Isabella are good friends, so naturally, she'd have a crush on him, right? It's mirrored with the Emily situation: Ferb and Emily are good friends, so Emily would have a crush on Ferb.

Oh, the fanonical story possibilities... *drifts off*

And yes, Pernessa makes a cute couple as long as they aren't actually a couple couple.