Dear Aunty S

My sister-in-law is a liar.
She recently told me how my husband says derogatory things about me when he visits his brother.
I believed her and confronted him and he denied it.
He insisted we visit his brother and wife immediately so we drove two hours when we got there she denied saying it to me.
But her husband, who I went to school with, hit the roof and told us how she is always lying so believed me.
Their marriage is now on the rocks and I feel guilty.

Aunty S responds

It is not your fault so there is no need to feel guilty.
Sadly you can never trust a liar and it sounds like your brother-in-law has dealt with quite a bit of drama throughout their short marriage.
She obviously needs professional help but in my experience liars never admit they have a problem.