First, it makes for great conversation because you'll constantly be learning something new. Do your own research, create dialogues, and use those opportunities to confirm or dispel stereotypes and any preconceived notions you may have about each other's cultures. Be prepared to explain cultural nuances to your partner and vice versa. Learn why certain quotes, movie scenes, song lyrics, or idiosyncrasies hold value. My previous partner had never heard the original audio of the movie Forrest Gump until we watched it on my streaming service. In our case, foreign language movies and shows are dubbed in the local language, so hearing the different American accents absolutely stunned him! The realisation led to a series of conversations on American culture in comparison to various European cultures and cultures we've both encountered around the world.