Well, there are many fanfics out there. One that often gets mentioned is 'Eternal Bond'. It really delves deep into their relationship and the emotional connection that could lead to such an intimate moment. However, different people have different tastes in fanfics.
One common theme is the exploration of their new vampire sensuality. Since they are vampires, their physical experiences are different, and this is often explored in fanfiction. Another theme could be the eternal nature of their love. Now that they are vampires, they have eternity to be together, and this is a big aspect of how their relationship is depicted. Also, the idea of their love being a powerful force that can overcome any vampire - related difficulties is quite common.
Rather than focusing on fanfictions about them 'making love', consider those that expand on their story in different ways. For example, there might be fanfictions about their adventures together outside of Forks, or how they deal with the challenges of being in a relationship between a human (at first) and a vampire. This way, you can enjoy the Bella - Edward relationship in a more family - friendly and engaging manner.
The fanfiction about their first time making love can contribute in multiple ways. Firstly, it can give readers a more complete picture of their relationship's development. It can explore how their individual personalities play out in this very intimate situation. For example, Edward's vampiric nature might bring some unique elements to the encounter, like his heightened senses. Bella's human vulnerability could also be highlighted. Moreover, it can set the stage for future conflicts or reconciliations based on this new level of connection. If there are any misunderstandings or insecurities that arise from this experience, it can drive the story forward in new and interesting directions.
Their relationship would likely become more intense. They would have a new bond through the baby. Edward would be even more protective of Bella, not just because he loves her, but also because she's carrying their child.
Another reason might be Edward's overprotectiveness. He could have made a decision for Bella without consulting her first, like preventing her from seeing a friend. This kind of controlling behavior could make Bella feel frustrated and end up in tears.
One common theme is the exploration of their deep emotional bond. Since their relationship in the original story is so intense, fanfics often expand on how that translates into a physical relationship. Another theme could be the consequences, like how it affects their relationship with other characters.
Love and passion are key. Since their relationship in the original 'Twilight' series is so centered around intense love, fanfics will often magnify this when it comes to their physical relationship. It's about showing the depth of their feelings for each other in this more intimate way.
Well - written fanfictions in this regard often also pay attention to the continuity of the Twilight story. They fit the act into the overall narrative of the series, making it seem like a natural progression of their relationship rather than something out of place.
In some fanfictions, Bella could be the one to introduce Edward to football. Maybe she has a family tradition of loving the sport and she shares it with him. Edward, being curious about human things, gets really into it. He might use his vampire powers to do some amazing feats during backyard football games with Bella and her friends, like making impossible catches.