Need Advice from anyone. ten points! Heartache!!

so just about a month ago i lost the love of my life, she broke up with me and is dating someone else, we were together for two years and i love her more than life itself. i dont know what to do, i feel so lost and broken. id give anything to have her back but i feel so helpless, she acted like it was really easy for her to do like she had'nt the slightest feelings left for me and i hurt so bad. i once promised her id love her forever, well i hold on to my promise not by choice but she doesnt love me? i dont know wat to do, im at my wits end and i just feel hopeless, advice is beyond needed so if anyone could please help me