Broken hearted

Please help me dear lord,with my broken up relationship of 8 1/2yrs. I had gave my all to this man ,that was my best friend and lover. I had gave 110% to this relationship, but he gave alot at first but then gradually taking less time for our relationship. He had told me never to hurt him or leave him. But it was me who got hurt inthe end. He threw everything out the door. I was the one giving all my love.amd devotation. I had always gave him compliments about how handsome he looked. He had only gave me only one two weeks before he had walked out of my life. And that was because I had gone to dinner and with my daughter. So please help me !! Lord with my relationship with my ex boyfriend mike. Thank you, sad and broken hearted.