How do I stop this heartache? is it my fault he's gone?

i met a boy three years ago. He and I grew to be the best of friends. one day he told me he loved me and i realized i did too. we have been together for 2 years of the 3. Just last week I saw him at school (junior year both of us) and he kissed me and we talked. he told me that he wanted us to be together forever, and i got teary eyed and said thank you that means a lot. two days later, Sunday afternoon, i was sitting on my porch picking flowers and thinking of Bryan. My mom came out with tears in her eyes and the phone in her hand and handed it to me. she stood back, gasping and crying. I put the phone to my ear and it was his dad. he told me, trying not to cry, that Bryan, my only love, was dead. he died walking to my house to give me an anniversary present. he was hit my a car and killed. how do i cope with the pain? is it my fault he died? please some comforting words are much appreciated. thank you.