r lives are busier than ever. We face demands on the space in our heads every second from emails, texts, and other alerts. Our children make demands on us, too, as they should, asking for the attention they deserve. But as we fill our minds with so many bits of information, we're actually happiest when we reserve space in our heads for our partner. Satisfied couples tell us that they fill this space with important information about their significant other, including everyday things like important dates and favorite foods, but also deeper things that mean something to our partners. For example, if there's a song that reminds your partner of a special time in their childhood, keeping that knowledge in your head adds to your private map of him or her. Asking questions about how your partner thinks about things or feels about different parts of life tells them that you care and want to know about them.