In fanfiction, if Tom kisses Spike, it could be a really strange and comical situation. Spike might be extremely shocked and confused at first. He could react by growling or even chasing Tom more vigorously than usual. It would be a complete departure from their normal relationship dynamics, which is mainly based on Tom's attempts to catch Jerry and Spike's occasional interference to protect Jerry.
A fanfiction story could start with Tom kissing Spike if there was some sort of miscommunication or magic involved. For example, a magic spell gone wrong that makes Tom think Spike is Jerry. So, without realizing, he gives Spike a big kiss.
Yes, there are some great ones out there. You can start by looking on popular fanfiction websites like Archive of Our Own. There, you'll likely find a variety of stories exploring the relationship between Tom and Marco. Some might focus on their friendship evolving into something more, while others could be set in alternate universes where their relationship takes different twists and turns.
Love and friendship are also big themes. Their relationship is often portrayed as a complex mix of both. In some fanfictions, they start as friends and slowly realize there are deeper feelings. There's also the theme of forgiveness. Given their past conflicts, they have to forgive each other for things that have happened. This can be really well - explored in fanfiction, like when Star forgives Tom for his outbursts in the past, and it helps them move forward in their relationship.
Well, obviously Tom and Star are the main ones. Tom with his demon powers and complex personality, and Star with her magical princess powers and her free - spirited nature. They are the core of any Tom Star fanfiction.
Another plot could involve Tom having to face his own family's past actions that are now affecting Star and the forces of evil. He has to make amends and find a way to stop his family's legacy from causing more harm, which would put him in a difficult position as he tries to balance his loyalty to his family and his love for Star.
One common theme is friendship turned into something more. Since they start as friends in the show, many fanfictions explore how that relationship could develop romantically. Another theme is self - discovery. As they interact in these stories, both Tom and Marco might learn more about themselves. And of course, there are often themes related to magic and adventure, as that's a big part of the 'Star vs the Forces of Evil' universe.
Buffy's relationship with Spike in the comics varies. Sometimes they have significant interactions and may even be romantically involved, but it's not a constant throughout all the comic series.