Fated Hearts by Andi Bremner

Lia Henley is escaping everything she has never known. Leaving behind a broken engagement and a disappointed family, she’s moved across country in search of the passion, desire, and romance she’s been missing. And she finds it all in one night, in the arms of Jacob McGaren.
But one night is all that Jacob can offer Lia. He’s already got two daughters, a sick mother, and a crazy ex-wife to deal with… he doesn’t need a sweet, sexy girl to distract him. A girl who he later discovers is his daughter’s new teacher.

But sometimes even those that seem ill-fated have a way of finding love where they least expect it.