[itsahoot]

It’s probably a very similar percentage to opposite-sex couples, but that’s not the issue.

It is also not true.

[sakic]

In a 1991 study, sex researcher Shere Hite found that 70 percent of married women have cheated on their partners; a 1993 follow-up study found that 72 percent of married men have as well.

It might be higher for homosexual marriages, but there is no way to know, yet.