The 37-year-old opened up about the tragic passing of his dad, describing how he worked through a lot of the pain by playing professional sport.
According to the former Sale Sharks superstar, Peter was killed in 2000 whilst he was protecting someone in a violent incident, leading Ben to set up his anti-bullying charity, the StandUp Foundation.
Speaking to OK! magazine, he said: "My dad got beaten to death while he was protecting someone. I got rid of a lot of my hurt and aggression playing rugby.
"I never actually mourned my dad's death until I set up the foundation. Justice was never done, so of course you're going to feel bitter."
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It hasn't been easy for Ben at the best of times as he is also deaf in both ears, making it very difficult to follow conversations unless he can lip read.
"I'm completely deaf in both ears," he continued. "I have to lip read, so I miss a lot unless I'm looking straight at the person.
"I don't wear the hearing aids very often because I can hear too much with them."
Ben Cohen and Kristina dance the Rumba to Make You Feel My Love - Strictly Come Dancing - BBC
Also struggling with tinnitus, the Northampton-born star added: "I'd love to know what silence feels like, what it's like to feel total peace."
Ben met his beautiful girlfriend Kristina, 38, back in 2013 when they were partnered together on Strictly Come Dancing, and the couple are now expecting a baby together.
While the pair insisted that the relationship was purely platonic at the time, things turned romantic when the rugby player split from his wife Abby, with whom he has two daughters.
This week's issue of OK! is now available to buy on newsstands.