I don't know bringing her up in conversations which she's not part of, I'd call that fixation.
Its on another level referencing her in supposed meets with you
Which you are not part of
That's a fixation for starters
You must have a vivid imagination

How long have you actually spent lurking outside her gaff 'on quite a few occasions' [incl. waiting] ?
If easier please round to the nearest day
Yet no review quelle surprise [well unless there's a malfunction on UKP], as if