be like ships that pass in the night

Of two or more people, especially those who live together, to not see each other very often; to not be in the same place at the same time very often. Primarily heard in UK. Ever since Georgina started managing the restaurant at night, she and I have been like ships that pass in the night. We've had a guy renting our spare room for the last two months. We were worried it would feel crowded, but he works so much that we're like ships that pass in the night with him.