I presume this isn't what you want. And I think it would be fine to clarify - H, D isn't what I want. But if we do D, I wouldn't want us to live together and be friends. I would move on and hopefully meet someone else to share my life.
Cherry, I agree with Toots on this. I wouldn't bring it up to him out of the blue. However, if/when he mentions it again tell him that you don't want what he's propsing. My H went on that crazy train too. We had one really bizarre night where he was all over the place wanting to break up, but stay great friends who still hung out one and one. I was very clear with him that while I did not want a D, if that happened we would not be hanging out and talking all the time. We'd be friendly as coparents. Not friends that hang out one on one. They WAS needs to understand that they can't have both worlds. They are either committed to the M or in friendly neighbor territory. Be calm and clear when you address it. Strong and confident is very attractive.
I'm sorry you're having a rough weekend. Have a glass of wine and bubble bath after baby goes to bed, or listen to some feel good music. Whatever helps to take your mind off the situation.
Me: 30 H: 35 M: 5 years S2 Signs of MLC started Feb 2014 BD - PA July 2014 Piecing/reconciling late July 2014