I agree with Arthur HV's complete answer. If you want to base a relationship on a lie to begin with, it is not respecting her desire, let alone her trust if she wills to maintain a relation with you based on your lie.
I am working on attachment issues which I regularly discuss with my psychologist. I am bringing this up because it makes me try to contact people from the past or become attached to certain past moments in my life which seem meaningless to these other people (maybe we just shared a good semester and cup of coffee or two) but not to me and I have strong nostalgia and desire to contact them just to know how they are doing. I have experienced multiple reactions from people ignoring / blocking me, to some shallow responses, and some others willing to engage into conversation and keep in touch.
Learning from this experiences and reactions I will start my message with:
Hello X, I know it has been a long time, I hope you are doing great! I remember in the past we [shared Y and Z experiences] and I have really good memories of the time we spent we together [doing A], so I thought I might look you up to see how you were doing after such a long time! Please excuse me if you find this inappropriate, it's never my intention to make you uncomfortable, feel free to ignore this message if so. As much as I would like to catch up, I will understand how you feel and respect your decision! All the best, Celius!
The point I am trying to make is that you should always let the other person know of your intentions and let them know you will respect their decision to not engage with you, making them feel safer and less creeped out. Best of luck with this person, hope you get positive results, but more than anything, respect their decision and live happy with it, it's their freedom!
