Fact 1: Onew finds spaghetti more interesting than Key. (THIS ONE HAS ME WEAK)
Fact 2: He believes that you can change people's lives by saying just one word. (Or by just standing there, breathing...)
Fact 3: Onew used to act like dogs but then he realised that he is human. (OK IM-)
Fact 4: He doesn't care much for dating or marriage; it's not his main priority. When he does get married some day, he wishes to speak to his wife formally, out of respect for her.