People are always reading more into things than what was actually said or written.
Someone comes along and says something that relates in your mind to something that bothers you, and then you wind up responding to what is on your mind rather than what was actually said. And all too often people will even take that extra step of attributing what is on their mind to what was actually said.
When you read between the lines, very often you're reading what you want to read.
And the world just keeps on spinning around like it always has.