User blog comment:Poptropica411/Phineas plus Isabella equals Phineas and Ferb: Across the Second Dimension in Fabulous 2D?/@comment-1647442-20100809182302/@comment-38.107.203.30-20110305170936

AgentGoldfish, are you forgetting that the summary says "with the help of their friends"? They might include Isabella. Not to mention there might be another version of Isabella in that other dimension. So it's possible that there might be a romantic Phinabella moment no matter how you look at it.