Am I on someones gtalk list?

How can I find whether I am on someone gtalk messenger’s list or not?

Whenever someone adds us, we get an add request but once we are added to the friends’ list then the other person can delete our name any time and we will not be notified. Is there any way to find out whether someone has deleted us or not?

How to find that we still exist in their friend’s list?

Thanks.