11. Dance night
Dress up in gowns and tuxedos if you like, or wear whatever is comfortable. Put on some soothing songs, lock your eyes with your partner and dance the night away. This is a beautiful way to bond and the physical contact only makes it better.
12. Quizzing night
You could have quizzes to test each other, and have a reward system to make it more interesting. Quiz each other on how well you know each other and enjoy the playful fights that follow when both of you screw up.