I think somebody should have shown him the July 14, 2014 WT that DISCOURAGES dancing and dance parties.
" For example, before becoming a Witness, one brother enjoyed the immoral atmosphere of the dance parties he frequented. But after learning the truth, he has completely avoided dancing even at Witness gatherings for fear of awakening improper desires or thoughts from his past. Of course, Christians are not required to abstain totally from alcohol, dancing, or other things that are not wrong in themselves. We are all expected, however, to take decisive and thorough action to protect ourselves from spiritual dangers."