Hi. No situation is ever hopeless. But your friends are right. You have no idea how many new people you'll meet in college if you go there so don't really trip on him so much. Best is yet to come, trust me.
Right now you might feel that you love him and can't live without him, but trust me, it's not true, you were only comfortable having him and got infatuated with him over time because you adjusted to him. Now you're in shock because you've been taken out of your comfort zone and are panicking.
I can give you advice as to what will bring him back to you faster than anything, but is it really worth it for you? Why do you want him so much? What's so special about him that no one else in this world couldn't have? Or are you only interested in maintaining your level of familiarity and comfort? You don't strike me as a person willing to go out there and take chances, but as someone who would do anything to keep from evolving. Life is about changing and evolving, so try and move on. One guy is only one guy, but there are so many more you've never met yet so how can you decide that the boy who broke up with you TWICE already, is the best of the best?
Usually what would work the best to get someone back and make them miss you like hell, is no contact rule which is exactly what it says-no contact, no communication and no thought process involving this particular guy. So your friends are absolutely right about so many things that you should move on and not talk to him or make any effort to talk to him and definately not email or call him.
But is it really worth it? He'll come back and dump you again. How many times are you willing to tolerate that? If you think TWICE WASN'T ENOUGH, use the no contact rule and delete him off completely and keep it that way until HE CALLS YOU OR SOMETHING. That's how you might get him back, but I don't understand why you'd want him back.