Er.. are あなた asking if they're allowed to have a girlfriend? Because I've heard of a company placing a dating ban on a group, but idols have been known to 日付 secretly to try and avoid scandal. Like Jonghyun and that actress chick, SM denied they were dating at first but eventually they had to 確認 it and a big SCANDAL happened.. and now Baekhyun and Taeyon.. but as far as I know, technically they're free to 日付 whoever they choose, though no one in SHINee appears to have a girlfriend as of today. I don't know if that made sense または if that was your question, but hope it helped some.