It may also be worthwhile to clearly understand what may presently be bothering her now (if anything) and what she is worried about.
As a relationship develops exclusively between a man and a woman, there needs to be a full unfolding of each individual's life to the other. It is up to each to decide how to proceed (hopefully with God, front and center).
This friend was attractive, had a bit of a reputation with the guys, dated married men and would have a fit if a female tried to interfere in one of her affairs. Yet he would always defend her. Needless to say, things did not work out.
As with anything, perhaps a closer examination of the relationships involved is necessary to decide what is beneficial to the marriage, and what may detract.