For Love or Charity (McCallister's Paradise #3)
Chantel Rhondeau

When Sydney's office is trashed and she receives a threatening message, she's certain Matt must be responsible. After confronting him, however, she learns there is more to this man than is apparent at first glance. There's something about his eyes... besides, who can resist a man who helps homeless people get back on their feet? He seems to truly care about people and swears he would never hurt anyone.
Together, they work to uncover the identity of the person threatening Sydney, and Matt seems determined to keep her safe. Questions remain for her, despite the excitement Matt brings to her life... Does he care about her for herself, or is he more interested in her family money and what that could mean for his charity?