There are times when there are no tears, redness in the eyes and/or nose, or sniffles. As he quits "weeping," the person's countenance remains unchanged. The voice is not cracked, nor does its inflection shift. These are all signs that you are dealing with a faker. If you have any doubts about whether or not someone is being sincere when they appear to be crying, you can always ask them if they're really upset. If they say yes, then it was probably an act; if they say no, then they were indeed feeling sad or afraid. People sometimes cry when they aren't even that sad in order to seem like they're affected by what others say. So if you suspect that someone isn't actually feeling anything, don't worry about them too much. They may just want to put on a show for you.