Do you want to cry to show your T how sad/hurt/despairing you are - maybe you could do it with words if you cannot actually cry and if you can find the right words to describe your feelings at that difficult moment?

Perhaps you feel that crying would help you clear the unpleasant feelings that accumulate - again if tears won't come, perhaps oyu could say how you feel and that you need a moment to process your feelings?

Just speculation, hope if helps.