Full Name: Unknown
Known Aliases: "Mark"
Status: Unknown, but presumably alive
Distinguishing Characteristics: None known
Marital Status: Unknown
Very little is known about Patty's mysterious ex-fiance, Mark. While it's been hinted several times that Patty is bad at intimate relationships, it wasn't until the final chapter of To Thine Own Self... that she opened up to Dexter about her engagement and failed wedding. According to her, on the day before their wedding Patty "did something very stupid. Naive, careless, cruel, and stupid." As a consequence, her fiance broke off the engagement, leaving Patty standing at the altar for eight hours, humiliated and ashamed. This mysterious act has tainted every relationship she's had since, perhaps to the point where she subconsciously sabotages them before they reach a critical state. Although Dexter has shown an obvious interest in her, she has repeated pushed him away, keeping him at arm's length.
- Patty opens up to Dexter about her failed wedding
- Patty theorizes that her break-up with Mark is sabotaging her potential future with Dexter
- While Dex lies unconscious, Patty uses Mark to find an easy way out
- None known