Hello nyc, is it possible to ask him what he needs? and if possible calmly explain to him that you dont know, you dont know how to be in the situation? You dont want to provoke him obvioulsy but if you are just honest you might be lucky and find he does know what he wants from you. He may be able to help you understand him. Telling him you are there for him is a very good idea. He's a lucky chap to have you.