Can’t shake it – need advice.

So about a month ago, I (35M) started to feel disconnected to my wife (35F). We were/are basically roommates. There was no intimacy, we wouldn’t talk much, just there essentially living. Well, a few weeks ago she went to her friend’s house to spend time with her and I was home alone and I enjoyed it, I didn’t feel that I missed her, and I didn’t feel the need for her to be home. When she got home that night within an hour or so I was ready for bed and went to sleep. And the next morning still not really talking, I did ask her how her night was etc. The next day she knew something was bothering me so she asked me what was wrong and we talked, during our conversation I brought up how I feel like we are just roommates, how we don’t communicate with each other, I told her basically that I didn’t crave her presences. She asked me if I had missed her the night before and I said that I didn’t. This whole conversation ultimately led to her saying that we should get a divorce. And she was so sure about it, swore up and down that we were going to get a divorce. Divorce was not something I was even thinking about, I assumed what I was feeling was going to pass over and that was going to be that. But again, she swore up and down that divorce was the only option and she stood on that for 3 days. On the 4^(th) day she was now saying that we are not going to get a divorce and that we are going to try and work on things etc. What I’m struggling with is the way she went about bringing up divorce and how she acted, yes I didn’t originally want a divorce, but now it’s all that I can think about when talking to her. I feel like if things ever get back to normal then something similar happens again, she will again say that divorce is our only option. What do I do???