Movies
I have passed some line some place. I am beginning to repel people I am trying to seduce.
— Jane · Broadcast News

Behind the line May contain spoilers.
Our reading
An editorial interpretation.
The speaker believes an unnamed boundary has been crossed: attempts to attract people are now driving them away. The uncertainty about where that line lies makes the admission rueful. The humour rests on the reversal between the intended effect of charm and the reaction being described.
Context reviewed