In ch. 18 exactly right?
Scene in chapter 18 has following requirements: you need to visit every single location in chapter 7 free roam and talk to Vic, you need to kiss Vic after chapter 7 free roam (unlock after talking to her in at least 5 locations but to unlock scene you need to visit ALL of them anyway), you need to NOT say something stupid to her during ch18. If you meet all 3 requirements you will get scene in chapter 18.