Again, I'm going in a million directions here, so I apologize. I actually just picked up Kathy Rudy's <em>Sex and the Church</em> wherein she argues that the not uncommon practice of nonmonogamy (among other things) is a better materialization of the Christian virtue of hospitality than many traditional Christian ethics. I'm also reading Marcella Althaus-Reid's <em>The Queer God</em>, and she just discussed how many indigenous societies don't have a conception of marital fidelity, and the introduction of it with Christianity, oftentimes through genocide, also introduced quite negative social characteristics, such as the ownership of women by men, jealousy, consumeristic tendencies, etc. In both cases, I think it can serve to be a primarily colonial (Western, heterosexual) ethic than a necessarily Christian one.