How to Get my Boyfriend Back?

Ok, first of all please dont leave mouthy answers, i know i messed up, and im ashamed of it!! Ok, well me and this guy were dating for a month, we gotas serious as possible in a month, we even held hands on the bus ride home. About 1/2 a week before out one month, i felt non-attracted to him any more so i just dumped him right away, without thinking:(.... He was so upset he ever cried!!;( i know he has no reason to take me back at all.... AnywAys, O recently apologized to him, about 100 tiimes..... He says hes not mad and that he has another girlfriend, and i alsp told him that i have wanted him bacl since an hour after i dumped him which is 100% tru. We have been dating on ans off since kindergarten, and i respect that he has a girlfriend, but i want him bacl so badly that i cry sometimes!!! Please i need some ways to convince, and be truthful to him, that i want him and i need another chance and if i get that chance id never let him go!