There's a bit of overlapping dialogue, when Mick (Sting) follows Susan into her house and she's going up the stairs to her living room.
SUSAN: ....it depended on 2 adults behaving like adults.
MICK: It just feels bad. It feels bad, and used.
SUSAN (Something) months ago. I would have stopped it after the second month...
What does she say there?
Here's the dialogue section from David Hare's play, which is fairly identical to what we hear in the film -
SUSAN: The idea was fun, it was simple, it depended on two adults behaving like adults...
MICK: It feels very bad to be used.
SUSAN: I would have stopped it months ago, I would have stopped it in the second month...
Oh thank you! It's kind of an inconsequential line, but I replayed it a few times and was like "What the h#ll is our QUEEN of proper pronounciation saying???"
:)
As she walking up the stairs, Susan says,
What am I meant to feel, paper thin walls, your mother sitting downstairs. Straggly bumbs and bumbs sites, do you think I enjoy all that?