What happens after you leave the guy you adore and love like anything ?

I have loved a guy since i was a kid, I adore him, only if i could i would have worshipped him, i would have. But i have to let him go,

How am i supposed to live the life ahead ? Will i ever be in love again?

I am worried, that even if i marry another guy, I might be wondering about him on my wedding day, he is the most handsome, intelligent and hardworking guy i have ever seen,

What am i supposed to do ?