Wallflowers and Hathaways by Lisa Kleypas

A) The Wallflowers

1. Again the Magic
2. Secrets of a Summer Night
3. It Happened One Autumn
4. Devil in Winter
5. Scandal in Spring
6. A Wallflower Christmas


B) The Hathaways

1. Mine Till Midnight
2. Seduce Me at Sunrise
3. A Hathaway Wedding
4. Tempt Me at Twilight
5. Married by Morning
6. Love in the Afternoon

C) Wikipedia profile of the author

Link: DL