Sorry for the long post.. so then to the tricky stuff. I thought of you all when this happened. I dont know if he DID have an MLC or a crisis, or breakdown, or just depression, but he did give me a sort of explanation (again, without me asking, so his willingness to talk already, even if only a little, bodes well):

So in bed last night, he said it was lovely that I was there, he really wanted me to be there and he was so glad that I was... then he said "I love you" and hugged me and I nearly cried. I said "REALLY?" and he said yes and I think I said, because you said that you didnt...

Then he gave a little speech (falling over his words) that he had thought he didnt, he thought he knew what he wanted and knew what he was doing, but he didnt know what he was doing, or what he wanted, or it wasnt what he wanted afterall, but he thought it was, and he thought he didnt (love me he meant)... and thats why he did all of this.. that he wouldnt have done it otherwise, if he hadnt thought he did at the time, but he didnt know what he was doing and was wrong and his decision had been rubbish and now he did know what he was doing and what he wanted and he was REALLY glad that I was there, so glad...I said I was glad and that I loved him too.