he will decide, quietly, independently — because that is how he has solved every problem — that it’s over.
Do not fall in love with a smart, introverted man
Jennifer Lowe

Funny (tragically) how they just decide, isn’t it? 
And even when he talks to you about it, it’s no use, because he will talk from a point of view of having already decided what’s best for the both of you. It becomes a talk for the sake of being able to say you both had a talk about it, but it’s not a conversation because he’s not there to listen. He’s so used to solving the problem that he thinks he has the “right” solution and that’s it.