Jimmy's friends like Carl and Sheen would be very surprised. Carl would be the more hesitant one, not really knowing how to act around them after the kiss. Sheen, on the other hand, would be overly excited and would want to be involved in every aspect of their new relationship. Libby would be supportive but also keep them in check, making sure they don't do anything too crazy. Their reactions would also depend on how Jimmy and Cindy handle the situation after the kiss. If they act all shy and secretive, their friends would be even more curious and try to figure out what's going on.
One possible plot twist could be that their kiss is part of a science experiment gone wrong. Maybe Jimmy was testing a new device that accidentally caused a love - induced field, and he and Cindy end up kissing. But then they have to figure out how to reverse the effects without losing their new - found closeness.
In 'Pulp Fiction', Jimmy is that character who has this sort of regular - joe - caught - in - the - middle - of - mayhem feel to him. He's not part of the main criminal underworld like Jules and Vincent in the purest sense, but his connection to them drags him into their wild situations. For example, when they need a place to clean up and hide out for a bit, they turn to Jimmy's place, which causes all kinds of tension and comical - yet - dangerous moments.
In most comic storylines, Jimmy Olsen isn't a guardian. He's more often involved in reporting and assisting Superman rather than having a guardian role.
Jimmy was a guy whose house was used as a hideout or a place for the characters to deal with certain situations. His presence added an element of complication to the plot.
In my view, Jimmy isn't racist in Pulp Fiction. His character seems more focused on other issues and his interactions don't show any discriminatory tendencies based on race.