Does my boyfriend like toxic?

My boyfriend is one of the nicest and polite people I've ever met. He has had two serious relationships in the past. One of them was suicidal and lasted 3 years, and my boyfriend said he has no strength left to continue it. The other (the last one) was jealous, completely toxic, and controlling. She even asked him to remove his school friends from his social media and went as far as saying she will kill them and even changing the locks on his house. They were together for 2 years, and he said they made the decision to end it together, but he changed his phone number afterward. There are things that don't make sense to me. How could someone as good as him have been with such a woman for 2 years? When I asked him, he said that she used his first relationship against him and threatened to end her life. I asked, 'Didn't you realize she was like this from the beginning?' He replied that he noticed small things, but it wasn't this bad, and he ignored them. Does he like toxic people? I'm a feminine woman and I'm not like that at all. As I think about these things, I'm starting to dislike my boyfriend and lose my respect for him

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Does my boyfriend like toxic?
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