Perhaps their first time could be when they first try to combine their powers in a new and unexpected way. They might be in a situation where they need to protect their town from a sudden threat. They start by trying different things, and there are some failed attempts at first. But finally, they succeed, and this shared experience deepens their bond.
A possible plot could involve Steven and Connie attending a big event together for the very first time, like a grand ball. Connie is nervous about her dancing skills, but Steven encourages her. As they dance, they share some sweet and awkward moments. It could also be that they meet some old friends or foes at this event which adds more to the story.
One idea could be that they go on a special adventure together for the first time. Maybe they explore a new part of their world that's filled with mysterious crystals. They face some challenges during this exploration, like a tricky maze or a strange creature. And as they overcome these challenges side by side, they realize their feelings for each other are growing stronger.
A great fanfiction could be about Steven and Connie swapping bodies. This would lead to a lot of humorous moments as they try to figure out how to act like the other. Connie would struggle with Steven's powers, and Steven would have to deal with Connie's more studious and disciplined life. It could also be a chance for them to understand each other on a deeper level.
Adventure can be a big theme. They might go on an adventure together and during this, experience their 'first time' in various aspects, like seeing a new place for the first time or trying a new activity. Growth is also a theme. They grow as individuals and as a pair during these first - time experiences.
One idea could be that Lars and Steven go on a space adventure together. They might encounter new gem species and have to work together to solve problems. For example, they could find a planet where the gems are in a civil war, and Lars and Steven use their unique skills to bring peace.
In fanfiction, their kiss could be a turning point in their relationship. Maybe it's a celebration of a victory they achieved together, and the kiss is a spontaneous expression of their deep connection and mutual admiration. It might also lead to new adventures where they face challenges as a couple.
A more elaborate plotline could be that Steven and Connie are transported to an alternate universe where their roles are reversed. Connie has to learn how to use Steven's powers while Steven has to adapt to Connie's more studious and reserved nature. This would lead to a lot of character growth and interesting interactions as they try to find their way back to their own universe.
In many Steven and Connie fanfictions, their first kiss is often a moment of great significance. It represents a deepening of their relationship. It might be described as a tender moment, full of unspoken emotions that have been building up over time.
Perhaps in the fanfiction, the news of their baby brings a new sense of unity among the Crystal Gems and the humans in their community. Steven and Connie are initially nervous but quickly find joy in the little things like the baby's first steps or first use of gem powers. They could also deal with some judgment from others who are unsure about a half - gem, half - human existence, but they prove that love conquers all.
One possible fanfiction could be about Steven and Connie going on a magical journey through different gem worlds. They might encounter new gems, face challenges, and grow closer as friends. For example, they could find a world where the gems are all musical and have to learn to communicate through song to solve a problem.
In the fanfiction, Steven could be invited to give a talk at May's Pokémon school. May is assigned to be his guide during his stay. They start to explore the local Pokémon habitats together. As they do, they find out that there is a mystery surrounding a particular Pokémon that has been causing some problems in the area. They decide to solve the mystery together, and in the process, they find that they have a lot in common and develop feelings for each other.
One idea could be that they are on a dangerous quest together. In the midst of all the chaos and close calls, they realize their deep feelings for each other. For example, they might be trapped in a magical cave, and while relying on each other to get out, they share their first kiss and start to understand their relationship in a new way.