So they are getting pretty good at sex but they don't really understand dirty talk. Like why would you say those types of things to each other? Anyway so maybe they've started watching some holodramas, or are paying extra attention to how Snap and Jess flirt and they fail embarrassingly (for everyone else hearing them). Terrible innuendos overly personal dirty talk in public. Poe might have to step in and explain some things. Especially why it can be hot for each other not just that it's a competition to come up with the best line etc.
Later they start getting the hang of it and sorta like a first orgasm they discover how much they get off on it.