Practically everyone has experienced a romantic relationship loss during their dating years, and many people go on to experience loss in a more significant intimate relationship or marriage later in life. Significant personal distress occurs when we experience a valued relationship breakup. In fact many people report that relationship breakup, even while dating, is one of the most difficult experiences in their life. Moreover relationship loss is a significant trigger for major depression. Recently I teamed up with department colleague Dr. Lucia O’Sullivan, Canada Research Chair in Adolescent Health and Social Relations. Together we are engaged in a series of studies on the role of dating relationship breakup in precipitating distress, depression and suicidality in young adults. Ultimately our goal is to determine whether difficulty adjusting to dating breakup might predict a history of future depressive episodes in response to intimate relationship difficulties. Our studies are examining a number of specific questions about relationship loss such as: