I've had a thing for this girl since my Freshman year of high school in 2004. Her and I were friends, but she had a boyfriend then. I wasn't very confident then either. I ended up transferring schools, so we kind of lost contact since she didn't have a computer at the time.
I seen her out with her ex-boyfriend last year at dinner, I was with a friend of mine. When I got home, she had messaged me on Facebook saying "Hey! I think I seen you at Wendy's earlier, but I wasn't for sure it was you!", so I replied back "Yeah, it was me. I would've came and said 'hi', but I didn't wanna interrupt ", and she replied back "I knew it was you!!! You totally should've!"
I comment on her Facebook statuses occasionally, and she does the same to mine. That's about the only communication we have at the moment. Facebook seems like my only option to approach her since I've seen her one-time in 6 years. I don't know how I should "approach" her, and start off the first conversation without it being too random. and sounding too interested, I know that's a big no-no, so I have no idea how to go about this.