I listened to 2 books by Mary Robinette Kowal this week:
The Calculating Stars and
The Fated Sky. They are not romance novels - in fact, the main character is already married. But I found the books to be solidly romantic - the main character's relationship with her husband was so good. If you like SFR (science fiction romance) and don't mind that these are really science fiction, I think you'd like the stories a lot.
The setting starts in a late 50s America where most of the northern eastern seaboard - including Washington DC - is destroyed by a meteorite. The scientists of the day decide this is a potential extinction disaster and stress the need to get into space to create a colony so humanity can survive.
NOTE: This is all in the book's basic description - I'm not giving any spoilers.
I couldn't put these [audio]books down. She sucked me in.
I discovered after I "read" the books that she wrote these because of a popular Hugo-winning short story she wrote a few years ago:
The Lady Astronaut of Mars. For those of you who just have to read the entire series - the short story actually comes years after the two books, despite its being published before. Made me cry like a baby...I've been trying to decide if it would have hit me so hard if I read it first.
Trying to avoid spoilers...maybe in tags?