Interesting point you are raising here, and ofcourse it never hurts to examine one and one's motives deeper.

However even though all this might appear to be symptomatic of a need to control one's environment and circumstances by focussing on the possible dangers thereby having the irrational belief that these can be prevented, I really do feel that it's the "responsibility" towards another human being that makes this such a tough nut to crack for me. Towards myself I can let go of any beliefs etc. In the past I might have displayed risk-avoiding behaviour combined with some perfectionistic tendencies, however these do not play a role in the current dilemma and they actually do not play much of a role in my life as it is today at all.

I don't know really. I can put a link here in which I explain the reasons for my and others suspicions that Lyme might very well be contagious in one form or another but I'm not sure if you are interested in reading it. However this, and other peoples theories and stories through which I got wind of it is what I base it upon:
Contagious? What can we do and what do you think? - HealingWell.com Forum
I'm curious what you think.
Maybe I can just affirm/imagine/visualise that she would still love me for who I am even if I still have Lyme? I think this is what you are getting at. That it's an issue with accepting love and feeling worthy to receive? That's the point, I do have weird complaints still but after the initial antibody-test, nobody can really be certain if you still have it because you keep the antibodies and DNA-testing is still new and unreliable. So I can't even be sure if I still have it.
So much for the medicine-man's ramblings lol
Greetings Chasz