(((((rainbow))))))
It's not stalking, not even close. Seriously? Driving by someone's house ONE time? That in no way constitutes stalking.

I would be very tempted to do the same thing if I had directions to my Ts house. I would probably do it if she didn't live in a different town. And no way would I tell her that, so you're already ahead of me in that respect.

Don't beat yourself up, Rainbow. What you did wasn't "bad", it just is what it is. The fact that you are aware of some boundary there and are willing to talk to your T about it says it all.