Hello and welcome to e health forum.
It is very difficult situation, when relationships break, after a long time of being together.
When expectations of every individual, in a relation, change or are not met, it is usual to think about the future of the relation itself.
At this point of time, though it is very difficult to come to terms, you have to get yourself together and try to seek help from a counselor or a psychiatrist to help you analyse the situation.
Take this time, to know if the person, you are yearning for, is right for you. In case, you do think he is the right person, give him some time apart, to analyse for himself, if he has indeed feelings for you or not. In case, he does come around, then your relation will grow much stronger.
Crying and breaking yourself, down, might make him, feel that you are clingy or dependent on him, and hence his attraction for you might reduce. Show that you are strong and are confident enough, to hold on by yourself.
Get into other activities, like working out, or take a vacation alone or with friends and family, to get back into your rhythm. This will help to tide over the situation.
I hope this helps.