Tom: (interrupting) No, no, no. Just hear me out. I know I'm not your boyfriend. I know I never was. But... (pauses again) I don't care. I love you, Summer.
Summer: (calmly) Tom, I...
(The scene where Tom realizes he's in love with Summer and tries to convince her to stay) 5oo days of summer full movie
Summer: (softly) Tom...
Summer: (shaking her head) Tom, I...
(Summer shakes her head, and Tom realizes it's over) Tom: (interrupting) No, no, no