Consumerism is getting into relationships. The way we treat a product or service, “let me try this, if this suits/helps me I’ll stick to this”. The same funda is been followed in love & commitment. We just want to have options available (that we includes me). And now, this thing is going into a vicious cycle.
Nobody is willing to give a commitment. We label it as commitment-phobia. But I’ll like to label it differently as “consumerism”. No matter how hard you try, someone will treat you as an option (if you’re not so lucky) else you’ll keep somebody in your option list (if you’re really lucky).
I can be terribly wrong here (might sound orthodox as well) but that guy’s female bff or that girl’s male buddy are nothing but a simple way to label “options”.