When if at all do you share diaries with a friend?

I have a long-standing male friend who I have had several tiffs and good times with over several years. We are both widowed and having just begun to see each other more often now after several months break, he is beginning to repeat the old behaviour of wanting to know what I’m doing and know my diary contents. We made up this time on the grounds that our friendship has to be free and easy. I feel he is a very controlling man and today when I wouldn’t get my diary out to check dates he lost it again and became very child like and spat his dummy out. We are now not speaking and he has told me to cancel all the dates we did have together. He is so childlike. I just did not want to be controlled again like before. Ideas please? I know he gets depressed and is having treatment and I’m sorry for him I guess but I don’t want to be throttled again and end up myself in a state of anxiety.