I'm not sure where to go from here?

Going to keep this shirt. So this guy and I have been together, but not together, for almost 2 years now. I stay with him, my belongings and dog are here. We have a life. Last night I went a little crazy, as any girl who can't get any truth/sanity whether I am it for him or not is able to do. So now he has said he's done, he's sleeping on the couch, but still acting the same during the day. I don't know what to do. Is he done? Do we have a talk about it? I'm honestly just so into this guy, and would hate to lose him and don't know how to go about this situation.
I'm not sure where to go from here?
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