You Again — Ashlee Mallory

A hopeless crush…
Back in high school, Allie McBride thought the sun set around Sam Fratto's smiles, even if they were only friends. Now she's older, wiser, hotter, and teaching at the same school they grew up in. When Sam joins the faculty, she has a chance to make good on the crush that got away. But when a dead body turns up on school grounds, they realize there might be a murderer in their midst. The heat keeps getting hotter between Allie and Sam, but more might be in danger than their hearts…

The cute kid from high school is all grown up…
A family crisis brings true-crime writer Sam Fratto back to town after more than a decade's absence. Teaching at his alma mater seems like a good way to pass the time -- especially when he sees that Allie, the geeky, sweet-mannered girl from high school, has blossomed into the saucy teacher in the classroom next door. Too bad finding a dead body transforms his return into one of his true-crime books come to life. And when it seems the killer might be after Allie next, it's up to him to keep her safe…

A killer determined to keep the past buried at any price…
As if dealing with the return of one ghost from her past wasn't enough, it looks like the killer might be the person they least suspected. Someone from the past. Someone with something to hide. Someone who thinks Allie and Sam are getting a little too close to the truth. If Allie and Sam are going to get out of this alive, these two friends to lovers will have to work together…or die together…