Why is Curley's wife so flirtly with Slim,do they have something going on?

Curley's wife seeks attention. She specifically flirts with Slim because he is the man with the most power in the bunkhouse. He's the leader, the one the other men look up to, and he demonstrates a kind of quiet leadership. When Curley's hand is crushed by Lennie, Slim even orders the boss's son not to tell. Her husband, on the other hand, has a need to impress others all the time. Slim is tall and masculine while Curley is a smaller man who suffers from the need to bait larger men like Lennie to fight. Curley is loud and aggressive while Slim is neither. Curley's wife may wish she were married to someone like Slim, who is very nearly the opposite of Curley.