Phinbella. Isabella finally asks Phineas for some alone time. After doing so their lives soon change for the better.
Phineas and Ferb - Rated: K+ - English - Romance - Chapters: 6 - Words: 10,566 - Reviews: 137 - Favs: 100 - Follows: 35 - Updated: 11/15/2011 - Published: 11/10/2011 - Phineas, Isabella - Complete