It's also very telling that your husband distanced but chose to go back home with his parents too. He is looking for guidance and is doing so in the wrong places. He probably doesn't even know how to articulate what he is feeling, what he is going through and why he is unhappy.

While we may joke about midlife crisis, it's really no joke and can be a very challenging time in one's life. A person can feel lost in many ways, and isn't really present but lost and looking for ways to feel present somehow. And this can be a vulnerable time where one can come across another person who somehow helps them feel present. Much like the man who sat with Olivia in that scene talked about with her. He lost sight of who he was and he chose to walk her home because she gave him some guidance and she did not invite him in to her home even though her husband was not home. She explained to him "I am married, and I know who I am", that's why it's time for you to leave.