While this didn't quite have everything thing I need to give a book that elusive 5* rating, I think this was a favorite Christmas read. It was a random pick, seeing similar titles on Goodreads or something. Kindle copy included in KU (I subscribed for December) and audio was on Hoopla. 

There were five "parts" ... 1) The Plan  2)Frank  3)Jasper  4)Leo    5)Maggie's Decision ... multiple chapters in each part. It was 1st person (Maggie's POV) and present tense (well written, I didn't even notice). British setting/accents.

Our family is a fan of the British TV series "The IT Crowd" ... and this definitely had a similar set-up. The girl manager, and three guys, stuck in the basement, not always an included/appreciated part of the company.  Basic premise is that Maggie, who didn't have holiday plans, is going to spend a couple days with each of the guys over Christmas (she's actually helping out Frank as his Plus1 at a wedding, fake dating trope).  

There were a few laugh out loud moments for me ... I don't laugh out loud very often. 

Several references to modern tv/movies (didn't write them down, Downton Abby? Sean Bean was one).  Also a reference to Wordle (it's a family favorite too). 

I correctly predicted the ultimate decision ...

ProFanity x22, and while not as graphic/spicy as some books, there was still enough sex that I'd be hesitant to recommend to some family/friends.