losing the love of your life

I lost him 3 weeks ago and I just can't seem to think straight, I miss him so much he is literally all I want. We were together for 1 yr & 2 months but it was a committed relationship It's very hard going through this, I've had other relationships but nothing like this. We had plan to get married, we lived together alone on the summer he had told his mom he wanted to marry me he started building a house for us and everything we had is now gone.. Idk what to do I really want him back, we were on long distance which made the heartbreak harder on me, he just can't seem to trust me anymore and I can't beg him to stay we havnt had any communication ever since but I do pray to God to heal our broken relationship. I feel right now all i can do is wait and give him time to think about what he really wants, our future was planned out already and I can't lose what we had I can't let go.. I just dont have anyone to talk to that can relate to me, I'm so heartbroken..