I think BluWave's advice is spot on. The only thing I would add is that it sounds like your W has lost touch with reality. Technically, this is psychosis. Do you know the Eminem song Stan? In that song, the fan (Stan) thinks he has an actual relationship with Eminem, though in reality they don't know each other. However, the fantasy is so real to Stan, that it makes him do some really horrific things in real life. In your situation, there is no guarantee that the fantasy will end even if: (1) the celebrity outright rejects your W or (2) you expose the A. If I were you, I would consult a mental health professional on how to handle your W's psychosis.
Gordie 40s W 40s M20+ kids 2016 BD W fantasy affair w OM1 I do everything wrong 2017 I start to DB W says TLTL files for D PA w OM2 2018 I do LRT W drops filing and OM2 situation slowly improving