Teresa Lisbon, heartbreaker? On Thursday's episode of The Mentalist, Patrick Jane (Simon Baker) and Agent Lisbon (Robin Tunney) investigate a surfer's murder. But as they begin questioning suspects, Lisbon is shocked to come across Greg Tayback (guest star Kenny Johnson), her former fiancé! In our exclusive first look at the episode below, Jane instantly seizes on the uncomfortable tension between Lisbon, Greg and his wife (Claire Rankin). When Jane stirs the pot by asking if Lisbon broke Greg's heart, it becomes clear that Greg's wife has heard far more about Greg and Lisbon's past than she wanted. Awkward!