Roller coaster and then some

[daring]

So tonight I'm on a bit of a shock. As I said, since he came back in Jan after being suicidal things were overall ok. We were connecting, talking and even though he said he didn't know yet things seemed positive.
The last few days he's been more withdrawn again. Seems to be cycling down into some depression and I noticed he was focusing on how he couldn't seem to connect.
He went to IC today and tonight seemed down. As we started talking he kept seeming like he was giving up, that he just didn't see how he could break down the walls enough to have the relationship he wants with me. And at one point he said " I want to have the deepest possible relationship with you, but in afraid I'm already there and this isn't enough". He seems incredibly sad. Has even said he loves and cares for me. When I try to phrase back to him what he is saying he keeps backing off from the finality of it and says he's looking for a way for that not to be the answer but he doesn't know.
I told him he has to take this journey regardless and I'm willing to take it with him, but I can't force it. He then said he keeps thinking I'm going to be looking for or expecting more from him and he's not eve sure what but then when I don't he's not sure what to do.
He then asked if we could put off the rest of the conversation until tomorrow. I said whatever he needs to do. ( though I thought I had heard a final answer- I'm not so sure and I definitely think he is confused)!
Help! How do I handle the follow up tomorrow???