It's quite possible. C. S. Lewis, of all people, has a discussion of the topic in his Surprised By Joy -- buggery was a very common phenomenon at his school.
Lewis' comment was that the boys on the "pitching" end of things weren't really homosexuals, so much as they were looking for an outlet for their sexual urges. Most of the "catchers" acted as such for the benefits that accrued, rather than for any sexual satisfaction. Lewis differentiated those from the "tarts," who would offer themselves up to whomever was atop the power structure. The effective power structure, such as it was, was controlled by the boys rather than the adults at the school.
In this case, I think the atmosphere in the FLDS compound was probably incredibly sexually charged ... and the boys would have been shut out of it by the older men who had access to the girls. And thus their outlet would have been ... other boys.
“And thus their outlet would have been ... other boys. “
The FLDS should have put more Sheep on the ranch.
The same thing happens in Islamic cultures, particularly with Arab men and boys.