I wouldn't doubt it if at least one of them has a secret baby stashed away somewhere and have probably most off them have paid off a girl for an abortion(jkay)remember the time when many bt5 members bought multimillion dollar homes in cash?
According to the kpop tea account shared by @arhur12 , it's money laundering by company through idols.
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also,there 's some baby news with #bt5, around may last year.
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Apparently,it is jm.Comment to a different post mentions about his pregnant gf.
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Once yn said he had a daughter but armies swore that it was a mistranslation and that he was talking about his dog but yn has a male dog