Charmed & Deadly (Bronwyn the Witch, Book 3)

Bronwyn is used to making enemies-when you dedicate your life to ridding the world of evil magic dudes and dudettes, it can happen. So when she first realizes that an attempted hit on the Prime Minister was really for her, it's just "same spell, different day." But then something about this hex reminds Bronwyn an awful lot of an ex-Jason Gladstone, who was her college sweetheart until he tied her up and tried to drain her of her powers. Talk about a date from hell.