My boyfriend has a violent past should I be worried?

He told me as a child he had a lot of anger issues and would get very aggressive when tormented. He says now he’s developed a thick skin against insults so he’s fairly passive but the deep anger is still below and if he’s really really stressed it can trigger him.

Should I be concerned about this? He says he has control on it and would never hurt me but what if we got into a really bad fight? What if he didn’t realise what he was doing if he got lost in his anger?

My boyfriend has a violent past should I be worried?
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