Thanks to Katrina for these Coupling transcripts.

Jump to season: 1 - 2 - 3 - 4

Season 1

1x01 - Flushed
1x02 - Size Matters
1x03 - Sex, Death & Nudity
1x04 - Inferno
1x05 - The Girl with Two Breasts
1x06 - The Cupboard of Patrick's Love

Season 2

2x01 - The Man with Two Legs
2x02 - My Dinner in Hell
2x03 - Her Best Friend's Bottom
2x04 - The Melty Man Cometh
2x05 - Jane and the Truth Snake
2x06 - Gotcha
2x07 - Dressed
2x08 - Naked
2x09 - The End of the Line

Season 3

3x01 - Split
3x02 - Faithless
3x03 - Unconditional Sex
3x04 - Remember This
3x05 - The Freckle, The Key And The Couple Who Weren't
3x06 - The Girl With One Heart
3x07 - Perhaps, Perhaps, Perhaps

Season 4

4x01 - Nine and a Half Minutes
4x02 - Night Lines
4x03 - Bed Time
4x04 - Circus of the Epidurals
4x05 - The Naked Living Room
4x06 - Nine and a Half Months

Random Coupling Trivia

Jack Davenport (Steve) chose the theme song "Perhaps, perhaps, perhaps".