How are you doing?
What is your own context of 'believe in God'? The fact that some people do not go to church or mosque does not mean they do not believe in God. Many believe in God but take religion as a thing of the mind and not until you go to church or mosque.
Back to your question, if that person possess 80-85% characteristics of my ideal woman, I will go ahead and marry her but on one condition, she must be ready to accept and follow my faith. It is a saying that women does not have religion i African context, let me put it that way. As a wife(submissive one) she should be ready to follow the faith of her husband, and when love exist in the relationship and is not one sided because it takes two to tangle, she should be ready to accept my faith as her husband or husband to be.
Have a nice time.
ENJOY!

Love only can not sustain a marriage. Someone that does not beleive in God is  veritable tool devil's hand. Cat and mouse can not stay together.