User blog comment:Poptropica411/Phineas plus Isabella equals Phineas and Ferb: Across the Second Dimension in Fabulous 2D?/@comment-3347644-20110409144235/@comment-2203861-20110419202439

Ferb is a ladies man, meaning that Ferb-mister might not be faithful to Izzy. My money is on Phinbella.