Betrayal had fractured their family, yet she chose forgiveness, holding onto the fragile hope of rebuilding trust. But the presence of a child born from his affair cast a shadow she couldn’t bridge, a painful reminder of a past she couldn’t fully accept.
As Christmas approached, tensions ignited between the tangled lives around the boy—custody battles, clashing wills, and wounded hearts. In the midst of it all, love and resentment collided, threatening to unravel the fragile peace they’d fought so hard to create.

WIBTA if I leave my husbands affair baby with my MIL while the rest of us go on vacation








According to Dr. Harriet Lerner, a clinical psychologist known for her work on boundaries and family systems, ‘The most painful interpersonal problems are often caused by our refusal to set necessary boundaries with the people we love most.’ In this situation, the OP is attempting to enforce a boundary regarding her commitment to an annual trip, but the execution of this boundary is complicated by the existing relational triangle stemming from the affair.
The OP’s core motivation appears to be protecting her established life and traditions from further intrusion caused by the affair. However, her interaction with the ex-mistress (Leah) escalates the situation by introducing blame and accusations of selfishness, mirroring the very conflict that originally fractured her marriage. Furthermore, her response to her daughter—telling her to ‘stay in a child’s place’ and threatening her—demonstrates a breakdown in appropriate parental boundary setting. The daughter, having witnessed the infidelity, likely feels empathy for the child involved, and dismissing her viewpoint aggressively invalidates her feelings and damages the mother-daughter relationship.
The decision to drop the child off at the mother-in-law’s house is a functional solution to manage the logistics of the trip, but the conflict arising from it highlights poor co-parenting communication between the OP and Leah. A more constructive approach would involve the OP and her husband establishing a unified front regarding their schedule conflicts *before* engaging Leah, focusing communication strictly on logistical solutions for the holiday swap rather than assigning blame. For the daughter, the OP needs to acknowledge her feelings without justifying her own actions, recognizing that adult relationship issues create complex emotional landscapes for children.
THE COMMENTS SECTION WENT WILD – REDDIT HAD *A LOT* TO SAY ABOUT THIS ONE.
The original poster (OP) is navigating the difficult emotional aftermath of her husband’s infidelity, struggling to integrate his child from that affair into her life while protecting her existing family dynamic and traditions. Her actions, driven by self-preservation and a need to maintain boundaries against the demands of the mistress, have created significant conflict with her husband, the mistress, and even her own eldest daughter.
Given the high emotional stakes involving infidelity, custody agreements, and holiday plans, is the OP justified in prioritizing her established family trip and demanding that the child’s biological mother accommodate the custody schedule, or does this approach unduly punish the child and escalate conflict with others involved?







