The couple got together around May and went public with their relationship in June on the red carpet for Sorkin's new HBO show "The Newsroom."
A source told In Touch magazine, "They're very different people. She's focused on raising her daughter, Gemma, and he's working on his show. They'll definitely remain friends."
Davis adopted Gemma as a single parent earlier this year. Sorkin's show has received mixed reviews from critics but received a season two pickup from HBO.