Deadly Little Secret by Laurie Faria Stolarz
Ben has a special gift, related to touch, which allows him to "see" things. That alone would leave him ostracized by most teens just for being so different. Add to that the rumor that he is somehow responsible for his ex-girlfriend's death, and Ben becomes a target for harassment.
When Camelia and another girl at her school, to a lesser degree, start having weird things happen, is Ben the one responsible? Where will the stalking lead? Should Camelia go back to her ex-boyfriend, Matt, who is still interested in her?
I wasn't very happy with the ending, though I assume the second book in the series will start at (or near) that point, removing some of my disappointment. Hopefully. . . .
You can learn more about Stolarz and her books at her blog: http://lstolarz.livejournal.com/
My overall personal rating of Deadly Little Secret is a B+.