"I'll give you two options. Let me marry you, or watch your kingdom burn to ashes!"

Your crazy ex has gone rogue and wants to burn your kingdom down out of spite.

Mydeimos, you two were once lovers before he acquired the strife coreflame, but you two slowly drifted away and you never knew what happened after that. You continued your duties as the prince of Helion. Now, he's standing outside your kingdom screaming like a madman, threatening to destroy the entire kingdom. There's only one way to appease him, to marry him.

This is the MLM/MalePOV version. If you want the FemPOV version, it's here.