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People Whose Partners Cheated On Them With Friends And Family Members Are Sharing Their Heartbreaking, Blood-Boiling Stories

"My ex-boyfriend cheated on me with my sister. Unsurprisingly, I never got an apology from either one."

We asked members of the BuzzFeed Community if they've ever been with someone who cheated on them with one of their friends or family members. Apparently, this atrocious act is more common than you'd think! Here's what people shared:

1. "My husband cheated on me with my best friend of almost 10 years. Our old housemate had moved out, which left our extra bedroom open. My BFF moved in. A couple months later, she up and disappears for days. Then, she started acting super weird and kept avoiding me. Come to find out via a friend that my husband had sex with her while I was at work. It gets better, though! They did it in our bed. But wait, IT GETS EVEN BETTER. He did it to get revenge on me for cheating on him years prior. He admitted later that he did it intentionally to get back at me."

"I had cheated years prior and regret it to this day because of the pain it caused. He also effectively destroyed my closest friendship with his 'payback.' I lost my friend group by extension. We did stay together, but against my better judgment. If anyone cheats on you and is even a fraction of this cold and calculating, just head for the hills y'all...please."

samisunshine23

2. "This is my friend's story. So, her ex-boyfriend cheated on her with her stepmom. Her mom wasn't really in her life because she and daddy dearest had gotten divorced. So, when her dad met her stepmom (we'll call her Vivica), we were in our teens and juniors in high school. My friend was over the moon to finally have a mom figure in her life. Vivica and my friend did everything together; they were extremely close. One day, my friend calls me in tears, and it's for the sickest reason. Her boyfriend at the time had broken up with her because he had been cheating with Vivica. And, since he was 18, he wanted to date Vivica instead of my friend because Vivica was a 'better woman.' Eventually her dad found out, and he and Vivica got divorced. Luckily, my friend is doing much better and has blocked most of her family, and is currently studying to become a ICU nurse!"

queenlovie

3. "My father. His brother (my uncle) was in the hospital for a couple of months dying of cancer when suddenly my father started staying the night at his sister-in-law’s (my dying uncle’s wife) place to 'comfort her.' We all knew what they were doing, and my uncle even accused the two of them of cheating while on his death bed. A week after we buried my uncle, my father left my mother for his sister-in-law. Apparently, my father married his sister-in-law a few years after the divorce went through. I have zero contact with my father after everything he put us through."

—Anonymous

4. "I cheated on my husband with my stepsister's husband (my brother-in-law). My mom was married to my stepsister's dad. We had an affair for about six months, and I eventually got caught by my husband and he exposed us to all of our family and friends on social media before I could tell anyone. My marriage was over, but at the time, I wasn't sad. I continued to see the other person for a little bit after the fact, but eventually that stopped. His marriage was on the rocks and it affected my mom's marriage as well since she was married to my stepsister's dad."

—Anonymous

5. "He was my first boyfriend in high school. I was young, naïve, and completely in love with him. He was my first everything. After six months, I found out he was sleeping with my best friend. Losing the two most important people in your life at the same time sucks, but I’m definitely much better without either of them around."

—Anonymous

6. "My ex-husband cheated with my best friend, who was a bridesmaid in our wedding. They had a kid before I could even file for divorce. She and I had been somewhat estranged around this time due to her erratic behavior and the lies I kept catching her in. In hindsight, it was probably taking a lot of mental energy to conceal the affair and keep her stories straight, but it never occurred to me at the time. She was with the father of her children too, and had recently had another baby with him, so two families were ruined in this process. All for them to stay together only two years, have another baby, and become the most toxic versions of themselves possible."

"Now my daughter hasn’t seen her father at all in years and has a half-sister she has no relationship with (not for lack of trying on my part). I was absolutely devastated at first, particularly with the baby announcement because I am unable to have more kids. It was a slap in the face. Since then, I’ve realized it was for the best and I’ve been able to get to a really good place in life while they are doing horribly. My ex ended up having another kid with his family member's ex, so clearly he likes to keep things close to