It might progress slowly at first. They could start as friends, sharing lunches and talking about their classes. Jace might gradually open up to Clary about his dreams and fears. For instance, he could tell her how he feels pressured to be the best in everything. As time passes, they become closer, and their friendship starts to turn into something more, like when they hold hands for the first time during a school event.
Their relationship could progress through shared interests. If they both are into art, they might join the school art club together. This gives them more time to be around each other. Jace could be really impressed by Clary's unique artistic vision. They start to rely on each other more, and their bond deepens. They might even start to get jealous when the other talks to someone they see as a potential rival for their affection.
In the high school setting, their relationship could be full of ups and downs. At first, they might face some obstacles. Maybe there are rumors spread about them by jealous classmates. But instead of letting it drive them apart, it makes them stronger. They start to study together more often, which helps them understand each other better. Jace helps Clary with her math homework, and she in turn helps him with his English essays. As they overcome these small challenges together, their relationship blossoms into a deep and loving one. They might go on secret dates in the school garden or share a first kiss by the school fountain.
Their relationship might start with a simple attraction. Jace notices Clary's unique beauty and Clary is drawn to Jace's confidence.
It would change in many ways. They would go from being carefree high school sweethearts to having a lot of responsibilities. There would be more arguments as the stress of the situation builds up. But at the same time, they would also have deeper moments of love and understanding as they face this huge life change together. Jace might become more overprotective of Clary, and Clary would need Jace's support both emotionally and physically.
Their first interaction could be intense. Maybe Jace, with his confident and somewhat brooding charm, catches Clary's eye in the hallway. She might be intrigued by his cool exterior. He could give her a lingering look, and she might blush. Then, he might say something cryptic like 'You seem different from the others here.'
One possible plot could be that Clary and Jace face a lot of social stigma. Their friends might be shocked and some might even turn their backs on them. They would have to deal with their families' reactions, which could range from disappointment to support. They'd also have to figure out how to continue their education while preparing for a baby.
One common theme could be the challenges they face in high school while dealing with the pregnancy. Another might be the reactions of their friends and family. For example, their friends could be either very supportive or judgmental.
One typical challenge is secrecy. In some fanfictions, their families or certain school groups might not approve of their relationship. So they have to keep it a secret, which is hard when they're in high school and constantly around others.
Their relationship would become more centered around the baby. They would have to make decisions together for the sake of their child, which would strengthen their bond.
The relationship would evolve significantly. Before the baby, they were mainly focused on their own adventures and relationship. But now, they are parents. They would need to support each other in different ways. For instance, Jace might be more protective of Clary and the baby. Clary would be more nurturing, and they would both have to learn to balance their duties as Shadowhunters with their new family life.
Alec might also play an important role as a supporting character. He could be the voice of reason for Jace, making sure he doesn't make any hasty decisions. And Luke would surely be involved. As someone who has always been like a father figure to Clary, he would offer his wisdom and support, and maybe even help them figure out the financial aspects of having a baby so young.
In fanfiction about Clary and Jace's high school love, their relationship is often complex. It could start with a simple dare. Maybe Jace's friends dare him to ask Clary out, not knowing that he already has a secret crush on her. Clary accepts the date, thinking it's just a joke at first. But during the date, they find out they have so much in common, like their love for a certain type of music that plays in the local coffee shop near the school. This shared interest becomes the foundation of their growing love, as they start to spend more time together, sharing secrets and dreams.