A woman asked Reddit’s r/AmItheAsshole community whether she was wrong to ban her sister from babysitting her daughter after learning that the sister had become involved with her former partner. The post had received more than 2,700 upvotes and 414 comments at the time of publication.
The woman, who used the name Mia and the username u/infinitenarrative, said her sister Brianna had been closely involved in her daughter’s life. Mia explained that she shares a two-year-old daughter with Jake, her former partner, and that they had been successfully coparenting after ending their relationship.
According to Mia, her trust was shattered when Brianna and Jake appeared together at a family gathering. Brianna reportedly gave a speech about not being jealous when other people find happiness. When Mia asked what was happening, her sister said she and Jake had harbored feelings for each other for years.
Mia also said Brianna had hooked up with Jake during a period when Mia and Jake were separated. The two allegedly continued communicating secretly even after Mia and Jake reconciled. Mia emphasized that Brianna had been present at her baby shower and in the delivery room, making the discovery especially painful.
When confronted, Brianna cried and said she did not want to lose contact with her niece. Mia said their mother dismissed her concerns, arguing that she and Jake had technically been separated when he and Brianna first got together.
Mia later clarified that Jake has split custody and that she does not want to prevent him from seeing their daughter. Her objection was specifically to allowing Brianna to babysit as though nothing had happened. Her mother accused her of using the child to punish her sister and of acting out of jealousy.
Many Reddit users sided with Mia and said she was not wrong to establish that boundary. Some argued that Brianna’s concern appeared focused on maintaining access to her niece rather than repairing the relationship with Mia, while others suggested that Mia consider reducing contact with both her sister and mother.
The claims in the Reddit post were not independently verified. The account reflects the user’s description of her family situation and the opinions shared by commenters.
Sources: The Daily Dot.