But she said there s a non- Jw at her work she likes who apparently ticks all the boxes!
That sounds like a veiled threat. She might as well have said:
"There are other fish in the sea."
"Sh!t or get off the pot."
And he will still be there "ticking all the boxes" even after you're married. He's probably making a good attempt to start "dticking" HER BOX. If she is taking notice of him now, why do you think she wouldn't continue to notice him then when you have any other disagreement come to the fore.
(I may be over-reacting to this statement, but I dislike having a gun pointed to my head.)
Doc