Re: some advice please-feeling lost 
But I don’t understand one thing.. WHY do you want him back? He’s done it twice now, left you standing there and wanting to get away. What if you get him back and he does it for a 3rd time? Heard that saying.. Fool me once, shame on you, fool me twice, shame on me.. god knows what they would say about a third time! lol ok, it isn’t exactly the same thing as whats happening with you, but its similar. Do you not want a guy who you can securely be with knowing that he is going to stay by your side and love/care for you?
Tell you what, just don’t think about all of this for now.. focus on healing yourself first (people here have suggested what you can do to stop yourself hanging about for him) and ofcourse, you’ll need time. And if you still think about wanting him back, then think about in the long-run sense and not just how your feeling atm.
Anyhow, I really hope you feel better 