Sorry to hear your sad story. I know how much it really hurts when they say they don't feel the same as you do for them. It seems to me that he got carried away too quickly without thinking about the long run and should have got to know you better before promising too much such as he did. Maybe like you say he was worried about what friends and family would say about another long distance relationship what with family comittments etc. I think he should have been more open from the beginning about his problems & comittments and like you say it seems strange that if he's saying he's short of money yet, still sending you some. It makes it hard to work out if he's telling the truth about everything and if he's still hiding something.
I don't think what you did on Facebook helped by adding his friends and the pics etc. I wouldn't have been happy with that, and have you have to respect each others wishes. But then I wouldn't have treated you how he did. He could have done it slowly and just added you as a friend, then you could have seen what each other was up to. Viva and I are taking it slowly on Facebook, she didn't want to change her non-mentioned relationship status on Facebook as she has a big family who already give her pressure & ask questions about getting married etc! But some of her close family and friends know about us and will have seen the pics of us together on Facebook already which she hasn't hid.
Like you and others say, it seems like you are his secret and he doesn't want anyone to know. You shouldn't propose to someone and plan all what he did if you still want them to be your secret and no-one to know about them. As everyone has said, if you make all those plans, you should want everyone to know!
The trouble is, although you might want to keep chatting with him as friends, if he really does not feel the same about you and wants only to be friend's you'll make it harder on yourself as you'll want more which will keep hurting you. I think it's best to keep busy with family and friends or new interest & when you feel able to start to look for someone else. Maybe then he might realise that he does feel more for you, but if that does happen he needs to be 100% honest and realistic with you about his situation.