Their relationship can be developed through shared experiences. For instance, if they face a powerful enemy together, they'll start to rely on each other more. After the battle, they could have heart - to - heart conversations that deepen their bond.
Another way is to put them in a situation where they have to protect something or someone important. Let's say there's a young wizard who is in danger, and Romeo and Wendy take it upon themselves to safeguard the child. Throughout this journey, they'll face various challenges. They'll have to comfort the scared child, find food and shelter, and fight off any threats. All these shared responsibilities and the emotions that come with it will strengthen their relationship. Wendy might show her nurturing side, and Romeo his brave and protective side, making them see each other in a new light.
You can develop their relationship by having them learn new magic skills from each other. Romeo could teach Wendy some fire - based defensive techniques, and Wendy could show Romeo how to use the wind to enhance his attacks. This exchange of knowledge would bring them closer. Also, during their training sessions, they might have some fun and light - hearted moments that add a new dimension to their relationship. They could tease each other, laugh together, and slowly fall in love.