Magnets, Daggers, and Warlock Wars — C.R. Kwiat

After a home invasion causes the death of Lena Tebaeu's father, strange things begin to happen. Her best friend at school keeps an annoyingly close eye on her, she gets a recently written letter from her great grandmother who had died when she was just one year old, and a man she had never met before named Shade appears out of thin air and threatens her with a knife, then forces her to kiss him. It is not until she becomes emerged in their world of magic and time travel that she finds true love, but it is threatened to be taken away as a conflict with Shade escalates into a personal war - a war that he never wants to win or lose, for it is the fight that thrills him the most.