She could be loving. In stories, loving wives often show affection to their partners and family members. Maybe she hugs her kids tightly every day when they come home from school and gives her husband a warm kiss when he returns from work.
I'm not sure who Sarah Jessie specifically is. But generally, a real wife might have stories about how she manages the household, supports her partner's dreams. For example, she could be the one who always wakes up early to prepare a delicious breakfast for the family, or she stands by her husband during tough times at work, offering words of encouragement and practical solutions.
Yes, there are likely many out there. You can start by looking on popular fanfiction websites like Archive of Our Own. Just search for 'Jessie Luke and Jessie kiss' in the search bar, and you should be able to find relevant stories. However, the quality can vary greatly, so you might have to read through a few to find one that really suits your taste.
For Jessie, you can develop her by showing her growth in terms of her relationships. If she's shy at first, show how she becomes more confident around Tony and the other Jessie. Tony can be developed by giving him a backstory. Maybe he has a troubled past that makes him more empathetic towards the Jessies. The other Jessie can be developed by highlighting her differences from the first Jessie. For example, if one Jessie is more artistic, the other could be more scientific, and show how they learn from each other.
One possible plot could be that Jessie and Luke are friends who gradually develop deeper feelings for each other. They might go through some adventures together, face some challenges that bring them closer, and finally share a kiss in a moment of realization of their love. For example, they could be working on a project and start to notice little things about each other that they find endearing.
One idea could be that Jessie and Tony are partners in a detective agency. They get a case that involves a mystery related to Jessie's past. Along the way, they face various challenges and their friendship evolves into something more. Another plot could be that they are all in a post - apocalyptic world and have to work together to survive, with Jessie having some unique skills that help the group. A third plot might be that they are part of a theater troupe, and there are love triangles and rivalries within the group as they strive for success on the stage.
Sarah was significant as she was Abraham's wife. She was part of God's plan to create a great nation. Even though she was barren for a long time, her eventual pregnancy and the birth of Isaac were important steps in fulfilling God's covenant with Abraham.
I'm not sure exactly who Sarah is without more information from the story. But she is likely a person who has a weight problem and is the focus of the '600 pound life' story.