Elusive Dreams (Storms of New England #1)
Kari Lemor

Tessa Porter is no longer the shy little girl from his youth, but a life in foster care has left her leery of people. When his custody of the children is questioned, she offers to enter into a marriage of convenience to boost his case.
They don't expect the sparks that fly or their growing desire. When their marriage becomes real they have to find ways to heal together or risk losing their perfectly imperfect family for good.