My partner is very religious, I am not. I am deeply spiritual....?

I have been in a dilemma for the past year, trying to decide if staying with my partner is right or not. He is very religious, Muslim. I have never followed any religion, but am deeply spiritual, God-conscious. He tries to persuade me that Islam is the only TRUTH..and this saddens me deeply. Although he is a beautiful soul...open-hearted..he is closed minded and doesn't respect what I believe. Although our love is deeply pure, we differ so much in this very serious area....any comments...??