Thanks guys. I would definitely have a chat and be frank about it before stopping, that wouldn't worry me. That's the frigging irony at the moment - the feelings aren't too much to deal with right now. But I am afraid of them getting worse. I have been in a situation with unrequited love before and it can never end well if the person doing the loving keeps trailing after the beloved one.
It feels bonkers. Why would I even want to work through it with her, and basically just explore in depth the reasons why somebody would reject me? How can that be healthy - surely the dignified thing to do is to have some self-respect and walk away? Or maybe I'm kidding myself and I should stay, so I can reprogramme myself to be a suitable candidate for a proper relationship out in the real world

I just don't know!