AITA for setting up a camera in my boyfriend’s room to catch his sister stealing my stuff—and now refusing to go back to their house

The original poster (OP) frequently left personal items like toiletries and clothing at their boyfriend’s house because they lived close by and wanted to avoid carrying the items back and forth. These items were stored in the boyfriend’s room, which he shares with his mother and sister.

The OP began noticing small items going missing, initially attributing it to forgetfulness due to ADHD. The issue escalated when a new, expensive bottle of conditioner was almost half empty within a week, leading the OP to suspect the boyfriend’s sister, who had recently complained about needing conditioner. Feeling the need for confirmation, the OP set up a camera to record the area where their belongings were kept, revealing the sister going through the OP’s things, including a personal bag.

AITA for setting up a camera in my boyfriend’s room to catch his sister stealing my stuff—and now refusing to go back to their house

As renowned researcher Dr. Brené Brown explains, “Boundaries are the distance at which I can love you and me simultaneously.” This situation clearly demonstrates a severe lack of appropriate interpersonal boundaries within the boyfriend’s family unit, which has spilled over to negatively impact the OP’s relationship with her partner.

The sister’s actions—taking personal items and rifling through a private bag—represent a significant breach of privacy and trust. The OP’s decision to install a camera was a defensive measure, a response to repeated, unacknowledged violations of their property and personal space. While covert recording in a private residence can raise ethical concerns, it often becomes a last resort when direct communication or standard protective measures have failed or are impossible. The reaction of the mother, who immediately shifted blame to the victim (“your trauma and your ADHD”) and prioritized protecting her daughter over addressing theft and invasion of privacy, indicates a dysfunctional pattern of enabling and deflection within that household. This environment forces the OP into extreme measures to protect their property.

The OP’s action of walking away when the conversation became irrational was appropriate for de-escalation. The primary concern now is the emotional distress affecting the boyfriend. Moving forward, the OP needs to establish firm, non-negotiable boundaries regarding their belongings, potentially involving removing all items from the boyfriend’s home until the family dynamic shifts to respect privacy. The boyfriend must also be strongly encouraged to address his mother and sister’s behavior independently, as the OP cannot manage the emotional fallout of their family’s poor conduct.

THIS STORY SHOOK THE INTERNET – AND REDDITORS DIDN’T HOLD BACK.

The central conflict involves the OP’s reasonable action of documenting theft and boundary violations versus the resulting familial backlash, where the mother invalidated the OP’s concerns by focusing on the method of evidence collection (the camera) and using the OP’s mental health as a deflection tactic.

Given that the OP sought proof for ongoing theft and invasion of privacy, and was subsequently attacked for setting up the camera, the core question remains: Was the OP wrong to install a camera in their boyfriend’s shared living space to catch a pattern of theft by the sister, especially when direct confrontation proved fruitless?