Hey, I wouldn't say anything about the FB thing but I would pull back emotionally a bit. If he's saying all the right things and you really like him, allow yourself to enjoy it. He was with you the whole time he was visiting? That's great, right? Don't let yourself get ahead. Think of him as the fun boyfriend he is but not a possible future husband. If you jump ahead, your just going to give yourself an anxiety attack. Play, enjoy the relationship for what it is right now. It's great that you have someone special that you can share yourself with. Concentrate on what you can do to strengthen your self confidence, self esteem and personal wholeness. If you focus on self improvement, you won't be worried about what he's doing. Flirt, it's good for the ego to practice. Don't cheat but don't be afraid of enjoying yourself.