The explanation is clear, and has been for some time:
2 Thessalonians 2:11 (New International Version)
“For this reason God sends them a powerful delusion so that they will believe the lie”
26God let them follow their own evil desires. Women no longer wanted to have sex in a natural way, and they did things with each other that were not natural. 27Men behaved in the same way. They stopped wanting to have sex with women and had strong desires for sex with other men. They did shameful things with each other, and what has happened to them is punishment for their foolish deeds.