You never love him, now you consider a divorce.

Best outcome:
You decide to divorce, it's painful to both of you, especially him, after a while, he accepts your decision, you still be friends. eventually both of you find THE ONE. happy ending.

Worst outcome:
You divorce him, he is hurt badly, but somehow he is lucky enough to find THE ONE, and you never find yours, even regret what you've done.

The other way around:
Even you don't love him, you can appreciate his love. By doing that, you may find he is THE ONE you want to share life with.

Good luck