Why is it that most of their data is about gay men yet they keep using the phrase "gay men and lesbians"? Monogamy and length of relationships are very different in lesbian relationships versus gay men.
I'd like to see where they got their sample size of straight people and gay men. Because there's a lot more kinky, nonmonogamous straight people than this survey wants to pretend exist. And then there's all the straight people who cheat because they're too chicken to admit they don't want to try and take a vow of monogamy.
Also, where's the analysis of the impact of living in a relationship that is subject to phobia and denial of basic human rights? Because yeah, that would cause some stress on anyone's relationship.
The methods are faulty, their analysis is pisspoor, and their ends are purely political, aimed at denying a minority civil rights. Great side to be on, guys.