Lily: Well, you must have done something. Why did you guys break up?
Marshall: He wasn't ready for a commitment.
Lily: Uh-huh.
Ted: And her birthday might have been coming up.
Lily: [angrier] Uh-huh...
Ted: Okay, so I didn't wanna get a boyfriend level gift for a girl I was just about to break up with.
Lily: So you dumped her right before her birthday?
Ted: No, I didn't dump her... right before her birthday.
Marshall: Uh-oh.
[flashback:]
Ted: [on the phone] Natalie! Hey, Happy Birthday! Listen...
[back:]
Lily: [hitting Ted on every word] Never. Break. Up. With. A. Girl. On. Her. Birthday!