SIL Accuses Her 17 Y.O. BIL Of Tricking Her Into Ruining Her Skin With Product She Stole From Him

Some families treat other people’s stuff like it’s communal property, and this one went straight for skincare.

OP went to stay with his family at his SIL’s family place for two weeks, and he brought his own skincare products along. He even left them in the bathroom, not exactly hidden, but also not “free to use.” SIL saw the products, asked him to use them, and OP said no. Then, a few days later, SIL accused him of ruining her skin with his products, even though he never gave her permission.

Now OP is stuck arguing with everyone while his SIL insists she’s the victim, and the timeline makes it feel less like “accident” and more like entitlement gone bad.

The OP asks:

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The OP went with his family to his SIL's family for a two-week stay:

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This case highlights the critical relationship between impulse control and the consequences of one's actions.

The OP brought his skincare products with him and put them in a bathroom:

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SIL saw his products and asked him to use them, but the OP denied her request:

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OP says he put his skincare in the bathroom, and SIL still managed to turn that “no” into a full-on blame game.

From a behavioral perspective, actions taken without forethought often reflect underlying emotional distress or a desire for immediate gratification.

Addressing these underlying issues is essential for fostering healthier decision-making patterns.

A few days later, SIL accused the OP of ruining her skin with his products:

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The OP was confused as she didn't have permission to use them:

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The second SIL claimed her skin was ruined, the story stopped being about skincare and started being about who stole what.

This situation underscores the importance of teaching young individuals about responsibility and the consequences of their actions.

This also echoes a man refusing to share his secret hot sauce recipe after his picky girlfriend crossed trust and boundary lines.

The OP tried to explain what happened, but no one was on his side:

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This incident caused him a lot of trouble, and he asked if he was wrong:

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Practical strategies for promoting responsibility include engaging young individuals in discussions about the ramifications of their actions. This could involve role-playing scenarios where they can explore different outcomes based on their choices.

Additionally, promoting emotional literacy can help young people articulate their feelings, reducing the likelihood of impulsive actions driven by emotional distress.

A Redditor said the OP is not in the wrong as SIL stole his things

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The SIL brought it on herself

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When OP tried to explain that he never handed her the spray, the family apparently chose SIL’s version over reality.

Redditors told the OP that he can't be in the wrong because his SIL is a thief. He never gave her that spray to use; she stole it from him.

Anyway, he should try to distance himself from this entitled family. Fortunately, he won't be obliged to spend any time with them in the future.

They are irrational, entitled people

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It's a good point

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"It’s infuriating that her selfish tantrum is interfering directly with your healthcare"

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She got what she deserved

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It was a valuable lesson

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By the time commenters pointed out SIL took his things anyway, OP’s “am I wrong?” question got a pretty clear answer.

This case underscores the critical need for impulse control and its direct impact on behavior, particularly in familial relationships. The dynamics between the sister-in-law and her brother-in-law illustrate how a lack of respect for boundaries can lead to significant consequences, such as the damaging effects on her skin from a product he claims she stole. This incident serves as a reminder that fostering a culture of responsibility within families is vital. By instilling emotional awareness, families can equip young individuals with the skills necessary for making sound decisions. Ultimately, teaching accountability is not just about preventing incidents like this; it is essential for fostering healthy emotional and social development in young members of the family.

He’s wondering if he’s the problem, but the family dinner did not end well for SIL’s excuses.

For another family blowup, see why one sister’s pet business had her brother-in-law refusing low pay help: Am I Wrong to Stop Helping My Sisters Pet Business Due to Low Pay?.