I'm so Lost & Heartbroken and we are both rabbit

I was born 1/31/1988 and my partner, DN, was born 4/6/1987 (so that makes us both fire rabbits according to Chinese Calendar).
We were best friends before becoming high school sweethearts and have been having an on again/off again relationship for 10+yrs. I have always felt like we were soulmates or soulmates from a past life. I have always felt like he was my "home". We stayed BFF ever after our many breakups. I have always loved him and even left my fiancé in Jan2011 to be with DN because I didn't want to marry anyone else but DN. Even against everyone saying that we are no good for each other, we got back to together in 2011 but then broke-up again in May2012. I have been dating different guys trying to forget about him but have not found anyone that could match our connection. Or have I found someone that makes me feel like "home", like this is who I belong to. I feel like we always find our way back to each other even after whatever messy breakup we have. Right now he is dating a new girl (11/03/1993) and I'm afraid that we won't get back together. He says that 2012 was the last time he would try to be together. He says he feels free now with his new GF because he does not have to deal with "US" anymore. I guess I'm just asking if I should keep holding on to some hope that we are meant to be together, just not right now. Or should I seal that chapter of my life and move on?