This study consists of two parts. Part 1 involves developing and pilot testing a hand-held computer program designed to assess antecedents, behaviors, and consequences of patient pain, as well as spouse response to pain. Five couples will complete a baseline survey and carry the hand-held computer for two weeks. They will be interviewed for feedback to refine the program. Part 2 is a longitudinal assessment of the psychological and relationship functioning of metastatic breast cancer patients and their spouses. The Optional Procedure for Part 2 involves using electronic diaries (EDs) to measure the cancer pain experience for patients with metastatic breast cancer and their spouses.