A few scriptures I'd like to bring into the discussion:
1 Corinthians 13:4-8
I hope I'm not taking these horribly out of context, but they seem to agree with the idea of constantly sharing your faith with your partner and not
Sure, all people are reflections of God and hence is their love to each other a reflection of Gods love to us. But a reflection is in case of a human (his/her love) and God (his love) not really so comparable; or would you say that a human ever could love even close as well as God? Read the Song of songs and compare it to 1 Cor 13 - you'll surely see a difference.
To be honest I think God has blessed you with a non-believing partner, He can work through you in order to try and save him. Even if if you choose not to, if you are happy then there is no sin in that surely.
You may not want my opinion but it might be of interest to you because I am currently in the same sort of situation, except I'm the one who doesn't fully believe. I wasnt raised religiously but my boyfriend was, at first we both thought this would cause problems but in my opinion the important thing is that he is trying (as I am) to believe and understand God, for a person who hasnt been brought up religiously (assuming he hasnt) religion and God can be a very hard concept, it basically means retraining your brain how to think
I hope I have helped shed a different light on your situation and you are welcome to PM me if you would like more advice
Good Luck