In a class by itself
(Book)

Dani Quinn had left Logan Webster abruptly years ago, with no opportunity to tell him the truth. She went to her high school reunion reluctantly, dreading a meeting with him. Logan is a rich man now, so when Dani told him of her work in a charitable organization that raises funds for mentally and physically challenged children, he suggested a donation of one of his properties. Unfortunately, the donation came with a shocking proposal. Not wanting to cause him more pain, Dani agreed to his unconventional terms, but she is once again forced to leave him to go where even he cannot follow.