In the context of Dissociative Identity Disorder (DID), alters are distinct identity states that can take control of an individual's behavior, thoughts, and emotions at different times. While it is possible for alters to integrate or merge into one another, where their identities and memories blend, it is generally considered rare for an alter to completely disappear and never come back.
Alters are often created as a coping mechanism to deal with traumatic experiences, and they serve specific functions within the person's internal system. Their presence is typically a result of the individual's need to compartmentalize and manage overwhelming emotions or memories. As such, alters may continue to exist even if they become less active or integrated with other alters over time.
As for the feeling of being in love with a specific alter, this is a complex and sensitive issue. The emotions and experiences related to DID can be intricate and intense. It's important to remember that alters are a part of the same individual, and the feelings directed towards one alter may be reflective of broader emotional needs or experiences within the person's internal world.
In such situations, seeking support from a qualified mental health professional with experience in working with dissociative disorders is essential. A therapist can provide a safe space to explore and understand these feelings and experiences, as well as help individuals develop healthier coping mechanisms and relationships with their alters.
Remember, DID is a highly specialized area of mental health, and having professional guidance is crucial in addressing the challenges and complexities that come with this disorder.