This happened a few years back. After my divorce was finalized, I met a woman on one of the Online Dating Sites. Things were going cool even though she was hesitant to date me right after a divorce. She came around after realizing I filed for the divorce, I filed about 8 months prior, it was about three months after my divorce was finalized and she was the first person I dated.

Fuck up number 1:

Her: I took sick leave today.
Me: Oh, you work for the government?

Her: HOW DO YOU KNOW I WORK FOR THE GOVERNMENT!!!

Me: You said "sick leave." Only government employees say sick leave, people with regular jobs say PTO (paid time off).

Her: Oh ok.

During this conversation she happened to mention she was a disabled veteran (important later). We made plans for an in person thing at some point after this.

Fuck up number 2:

We meet at Starbucks, have a good time. We planned to talk for about 30 -45 minutes but were there about two hours. Make future plans to meet up. Head out to the parking and walk past a vehicle in the handicapped parking spot with disabled veteran plates.

Me: Is this your car?

Her: HOW DO YOU KNOW THIS IS MY CAR!?!

Me: Actually I didn't. I saw the disabled veteran license plate and wondered if it was yours.

Her: Oh ok.

Me: Can I open your door for you.

Her: Naw, I got it.

Long story short, she stood me up after that. She did give me a call and say now was not a good time for us to date due to my recent divorce, we can be friends, we can do things we previously talked about and I said cool, I can use a friend post divorce. Then she never called me again, lol. My observant answers were a bit too coincidental for her. Looking back, she obviously thought I looked up her info (I did not do this, i did not have her last name and only had what was probably a Google voice number. I do not look people up beyond like a Facebook search after getting to know you.) and got spooked.

TL;DR: Made a woman think I was a stalker by being too observant, then she ended it. Sucks for me, good for her on being cautious.