Recurring dreams about a former classmate, especially someone you didn't have a crush on, can be quite intriguing. These dreams may not necessarily reflect romantic feelings but could symbolize unresolved issues or emotions related to that person or your past experiences in school.

Here are a few interpretations to consider:

1. Unprocessed Emotions: Your subconscious mind might be processing emotions or memories from your school days. This could include feelings of nostalgia, friendship, or even unresolved conflicts.
2. Symbol of Change: The classmate might represent a time in your life when you were going through significant changes. The dreams could be prompting you to reflect on how those changes impact your current life.
3. Desire for Connection: The urge to talk to him after waking up could indicate a longing for connection or a desire to rekindle old friendships. Even if it was platonic, such dreams might highlight your need for social interaction or validation.
4. Personal Reflection: Consider what traits or qualities this classmate embodies. Your dreams might be urging you to reflect on those qualities within yourself or your current relationships.

If you feel compelled to reach out, it's essential to weigh the potential benefits and consequences. It might be helpful to explore your feelings more deeply—journaling or discussing them with a trusted friend could provide clarity. Ultimately, the dream is a nudge from your subconscious to address something meaningful in your life.