If you don't feel listened to or as if your opinions constantly clash with someone else's, then that's a situation you can easily walk away from. You could feel determined to make your point or shift somebody's attitude. But that could feel like dragging a 1000kg horse to water. You're satisfied with what you believe in and know to be accurate. For now, that's what matters.
There's always something delightful about discovering something new about a lover. It might be time to bring a secret out from within your sleeve or perhaps spill some emotional beans. But don't see this as something to be fearful of. You're providing a window for somebody close to see the real you, regardless of how long they've known you. That's priceless.