AU where A is a super hero and B is a super villain! With C as B's assistant sidekick :3
Despite B themself being super oblivious to it, C notices how they obviously have a crush on A. C makes some comment about it to B, who misunderstood it as an idea to literally crush A with spikes.
When the plan is actually in motion, B asks why they chose to do that. A tells them about what C said and B gets all flustered.
Meanwhile C is probably in the back sighing and watching it all go down.