Just that. It's late and I am tired and this is bothering me. MIL said recently that DP has her temper and I'm finding it hard to move on from the comment. He has told me about how she was towards him, she was physically and emotionally abusive. We've been together for 7 years and what she said triggered a reminder of an incident in our early days where he reacted to something I'd said and it scared me. He didn't shout or hurt me but there was something really unsettling about his reaction. I addressed it at the time and he was apologetic. But that was the only time he's reacted like that and he's generally pretty mild mannered and caring. But her comment has stuck with me and I can't stop wondering what it is she knows about him that I don't. He was married for a long time before we met and by accounts on both sides it did not end well and became pretty toxic. I don't know what to do. Should I ask him what she meant by her comment? We're generally really happy and good together.