Nearly every time my boyfriend and I are talking to stranger men for whatever reason, they will look at and talk to him as if I am invisible, even if I initiated the interaction. An example of this was yesterday when we were in an electronics store and I asked a male employee a question about tablets because I wanted to buy one that day. The employee glanced at me but then proceeded to make his sales pitch to, and make eye contact with, my boyfriend, because apparently even a silent man is more important and worthy of respect than the woman talking to you. I only noticed this recently, but now I pick up on it so, so often. I actually feel embarrassed for the men who do it.
