This could be about a mother teaching her son appropriate behavior in the context of storytelling. For example, she might be guiding him not to include inappropriate or vulgar content in the stories he tells.
This is not an appropriate or ethical situation in the context of a traditional relationship. In a committed marriage, having an extramarital relationship with a 'boyfriend' goes against the vows and values of marriage.
These stories can vary greatly depending on the context and the nature of the relationship. Sometimes they might focus on love, support, and shared experiences.
The most obvious consequence could be the breakdown of the marriage. The husband, if he finds out, is likely to be extremely hurt and angry, leading to separation or divorce.
It might be common as it can be used as a plot device to show the depth of the woman's feelings for the man. If she desires this, it can imply that she is fully invested in the relationship and has no inhibitions when it comes to their sexual connection. This can add an element of passion and rawness to the story.
She describes her life as a difficult journey, like climbing a staircase. It's not an easy staircase, with tacks and splinters and boards torn up. This shows that her life has been full of hardships and obstacles.
Firstly, it can shock the son and make him feel extremely uncomfortable. He might start to avoid his mother or have negative feelings towards her. Emotionally, he could become withdrawn or overly rebellious. In terms of his development, his perception of normal family behavior will be disrupted, and it may even affect his sexual development in a negative way, such as developing inappropriate attitudes towards sex due to this abnormal exposure.