If you love someone, let them go..?

; if you love someone let them go. if they dont come back they were never yours in the first place. what does this saying mean to you..?like, what exactly does this mean. i fell in love with a boy last year and things were going great, but i never thought he would truly "be mine." again. i told him were better of keeping our distance. He always end up coming back. ive done this several time, just to make it easier on us. i always end up with a text message or phone call saying "i need you in my life." i dont think were ever going to truely stop talking. is that what this quote means? that were meant to be together..? its so hard when i let him go. i mope all the time and cry.. its pathetic.i cant even go out with anyone else becuase its not even worth trying, hes the only one i want. which is why i try so hard to get over him becuase it scares me that a guy makes me feel that way. im not used to that, no guy has ever made me feel like i needed him.