Phineas sighed sadly. He lay on his bed, doing nothing.
"I don't know what to do, he's been like this for three days." whispered Candace from the doorway "He won't eat, sleep, or build anything!" She frowned. Phineas had never been like this before.
"He's suffering from unipolar depression." replied Ferb, in a whisper.
"But why?" asked Candace.
"...Isabella." replied Ferb.
Author's Note:I have no understanding of unipolar depression, so please don't take it offensively or correct me on any details. All I know about it is that the sufferer gets highly depressed and it can last for weeks, months and even years.
Author's Note 2:I know that this is a very short chapter, but read on to see what happened to make Phineas so upset.