Are there open relationships that arent based on just getting more sex?

I am in an open relationship, but have never been with anyone else, because if I proposition someone, and am honest about my other relationship, it makes me seem like a scumbag. But I am more interested in having loving relationships with all people, not just trying to get lots of sex. My partner and I love each other, and just want each other to be happy, and dont want to put limits on that happiness. How do we make it all happen?