Dreaming of a partner leaving for someone else can indicate feelings of insecurity or fear of abandonment in a relationship. It could also reflect a fear of losing the partner to someone who seems more appealing or attractive.
Screaming in a dream can indicate a strong emotional response to the situation, which could suggest feelings of anger, frustration, or hurt. It may be helpful to reflect on these emotions and consider how they might relate to your current relationship or personal life. It may also be a reminder to address any concerns or issues in your relationship that could potentially lead to a break or separation.