Dynamic Duo Builder

I need to develop the relationship between:
Character A: [DESCRIPTION]
Character B: [DESCRIPTION]
Relationship type: [FRIENDS/RIVALS/LOVERS/FAMILY/MENTOR-STUDENT]

Create:
- Their shared history (how they met, key moments)
- The source of tension between them
- What each admires about the other (even if unspoken)
- What each resents about the other
- Their communication patterns (what they say vs. don't say)
- How this relationship challenges each to grow
- A scene idea that would test their bond