Only if the vote is 51.89% to 48.11% on an overly broad decision made against the backdrop of lies, finance illegality and interference from external actors.
I'm totally not bitter though honestly.
If the worst comes to the worst I'll just marry my partner (she'll still be an EU national after March) and take my skills (and taxes) abroad.
No, just like votes that happened just before new EU members joined in the past weren't revisited. You're either in or you're out. Britain's still in, and thus still gets to vote.