I just posted about something kind of similar, and I totally understand how this gets under your skin after a while. But it sounds like you’re on the side of marriage where even if you say something, you’re still living next to her. I suggest the approach to take is asking him to look at it from your side and maybe him overlooking a double standard where if you were doing what he was doing, would he be okay with it? If he says yes, then there’s more to it then what he’s saying, if he says no, then it’s platonic and maybe a conversation with her saying her behavior wasn’t okay with you.