H and h stalking each other, contemporary (SOLVED)

In The Hating Game H & h stalk each other.
She digs through his personal belongings when he's not watching and he keeps a journal of what she wore, when she smiled, to whom she talked to.
Plus some of more traditional stalking like heroine hiding behind the building hero lives in or hero sitting in the car outside her house, late at night, waiting for the heroine to return from a date.

I cannot find that book listed on Amazon, beesocks. When I look up the title, all I find is a multi-part story by Mia Black.

Thanks, beesocks. First person, so not my thing.