What does it mean when he becomes aggressive during sex to the point of hurting?

After years this is the first time he looked at me with hate. He looked stressed and like a psychopath. He looked like he was doing it on purpose to hurt me.
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He was hurting me down there on propuse because when I looked at his eyes there was hate and after he looked stress and depressed. I’m not sure if it was because his ex cheated or I mentioned I fell in love with another guy. He was always very nice even though he has narcis tendencies but sometimes I feel his traumas or the more power hi gets (his a business man) is making him arrogant. We’re both single and decided to try our friendship one more time but I’m definitely will ignore him forever
What does it mean when he becomes aggressive during sex to the point of hurting?
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