This article contains information of dubious canonicity. While not officially established as fully non-canonical, certain aspects of the subject may not be part of the official Halo canon.
David was the boyfriend of Doctor Lulu Hershey. After Hershey's refusal David moved out of their apartment after her refusal, then spent the following night on the couch. Hershey was not entirely certain why she had rejected David's proposal, but she was sure that to accept she would have to be entirely certain that she was ready for marriage.