As soon as Phineas and Isabella got to the bedroom door. They noticed it was locked. Phineas let go of Isabella's hand, then knocked on the door.
...
No answer. He knocked again.
Phineas: "Ferb? ... You in there."
Once he said that, he heard something like, things being knocked over and he could have sworn, that he heard someone putting clothes on, in a rush. The door knob had like 3 shakes, before they see Ferb, looking sweaty, looking down, and panting.
Phineas: "Ferb... what were you doing?"
Ferb looked up, after catching his breath.
Ferb: "That's... *inhale, exhale* not... *inhale, exhale* important. *inhale, exhale*"
Phineas: "O... K... Well, can we use the bedroom?"
After Ferb fully captured his breath, he looked at Phineas, then Isabella. Then nodded.
Ferb: "Just uhh... let me put away... uhh... something."
He closed the door. And not after half a minute a later. He opened the door, to let Phineas and Isabella in, and himself out. Ferb went downstairs, then turned on the TV, while rubbing his crotch a little. Now, he knows that Phineas was in love with him, as well with Isabella.
Ferb (whispering): "...Phineas..."
