Chasing Your Ghost by Maggie I. Fields

Riley has always been a bit different. She inherited that from her father. In school, she was labeled a freak. An outcast. She prefers the term medium.

Seeing ghosts has always been a part of her life, but when death strikes closer to home than ever before, Riley’s life changes in ways she isn’t prepared for.
Moving in with her estranged mother and stepfamily before starting college was never part of her plan, but when Riley meets the ghost of her stepbrother’s friend, she knows she needs to stay and help him move on. Only Asher isn’t your typical ghost. Something about him is different, and the two of them will need to work together to find out what sets him apart before he inevitably moves on, as all ghosts must.
But the more time Riley spends with him, the harder it becomes to imagine saying goodbye. She should have followed her dad’s rules and never let her feelings get involved because she can only see it ending one way: with a broken heart.