One school dance. Two single parents who should stay away from each other. A magical holiday hunt for one hundred boxes of fairy lights for their kids’ school dance that makes falling in love almost inevitable.
 
Britt
There are few worse things than developing feelings for your best friend’s husband. But when you do the right thing and step away, and they get divorced anyway? That’s one of those things. And now Adrian’s at my front door, insisting on helping me decorate for the kids’ winter dance. And I still want him. I also still want to make up with my best friend, but I’m afraid it’s all unforgivable. 
 
Adrian
I know I should stay away from my ex-wife’s best friend. Britt doesn’t want to see me. She pushed us away six months ago, but things still ended in divorce. Now I’m trying to get it together as a single dad, and I keep running into Britt at school events. I want to smooth things over with her. Britt won’t talk to me, but she needs help with the school dance, so if I just show up at the planning meeting, she won’t be able to say no. 
Tropes:
Holiday / Christmas romance
Forbidden love
Second chance
Ex-wife's best friend / Ex-best friend's ex-husband
Slightly morally grey (see above bullet)
Cats
Open door/ medium spice
 
This is a prequel novella to the completed Hart Sisters Trilogy: If We Pretend, Unless It's You, and Since We're Here. If you read One Hundred Lights first, prepare yourself to despise Britt & Adrian in If We Pretend!