.... what? It's my favorite pairing! *SHOT*
Besides his 'bro'mance with Ash, Pikachu's heart belongs to ketchup, damnit XD and those of you who are familiar with the original series would know that!
Aw just look at how much he's in love... delicious, delicious love...
Pikachu (c) Nintendo
And the ketchup.... technically belongs to Heinz? Not that you couldn't tell... MY ROOMMATE MADE ME CREDIT THEM ><