I actually was taking this in for quite some time. Trying to find if there was truth in this sentiment. Then I received a surprising email from my brother's 2nd wife. Saying that they are divorcing because of his "lies, narcissism, manipulation, and infidelity" and that she found validation in reading my accounts of his and my interactions. Unfortunately, if my brother feels estranged it's because he's trying to still hide from my mother the fact that he's a pathological liar and chronic cheater.