Your wedding day is meant to be all about you and your partner.

Explaining how things went down the mysterious woman explained that she had never had a close relationship with her husband's sister but things came to a head on her big day.

"The ceremony went perfectly but during the reception, my now sister-in-law kept making passive-aggressive comments to me about the wedding," the woman explained.

She added that her in-law was recently divorced so she decided to leave her off and try to ignore what she was saying - but things only got worse.

"Then, during our first dance, Lisa came up and grabbed the microphone from the DJ and started giving a speech about how she and my husband used to be so close and how much she misses him and how much he changed since meeting me," she wrote.

"How lonely she is now. She was laying it on thick like she was mourning my husband or something. I have to admit, at this point, I saw red.

"It was so inappropriate and disrespectful and it felt like she was trying to make the wedding about her instead of us."

After exercising patience for long enough, the bride finally decided to stand up to her sister-in-law and call out her behaviour, but it ended in an argument.

Things went from bad to worse when her family-in-law decided to get involved.

"After the wedding, my husband's family was upset with me for causing drama and ruining the mood of the reception," she penned.

"They think that I should have just let it go and not confronted Lisa about her behaviour. I feel like I was justified in standing up for myself and my husband on our special day.

"So, am I the asshole for causing drama with my sister-in-law at my wedding? Should I have just let it go and not said anything?" she concluded.

Anyone who came across the post appeared to take her side, sending her messages of support with one writing: "Do not apologise for this. Your husband needs to back you up."

Another agreed penning: "If it happened exactly how you said it has then I’m flummoxed at the fact that anyone could defend your sister-in-law."

A third added: "Definitely not wrong and you have a husband problem. How can he think this was ok."

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