I honestly don't see the distinction--I may have misspoken on "husband", but to my mind you can substitute "person she has some regard/feelings for", equally well.

Kinda think that's the point. He's not the love of her love. He's not even the like of her life. He isn't someone she cares about enough to talk about her past with. He's just a filling station on life's long highway. She's using him, and then she's done.

As I said, our heroine doesn't look to heroic in this one.