This isn't an issue very often as DH and I have a good relationship but every so often we have an argument and he always tells his mum whenever we do. It's nice that they're close but I don't really understand why she needs to be told. Yesterday we had an argument, it wasn't over anything serious just a bit of miscommunication and no one else needed to be involved really, next thing I know MIL is calling me. I do like her, I get on well with her usually but she has quite an intense personality and always says what's on her mind no matter what it is. I felt like a child being told off and it's quite humiliating really. So I spoke to DH about it and he said he had just mentioned what happened to her and she decided to call me, he didn't tell her but this isn't the first time this has happened so surely he knew