SUBREDDIT: r/relationships
TITLE: Me [M/25] want to ask a girl [F23] out that I haven't seen in 5 years.
POST: So in high school I really liked this girl, however she wasn't really interested.  We were friends through high school but I think eventually I got on her nerves (to be fair I was quite annoying looking back, and while I never just said I had feelings for her I'm almost 100% sure she knew) and so about 5 years ago she basically just told me off.  I didn't talk to her for a long time thinking that eventually we'd see each other again and make up.  

Fast forward 5 years and I still haven't talked to her, but I liked her so much that every time an opportunity comes up where I may want to pursue other relationships, I can never bring myself to go through with it because I always think that if I ever did see her again I wouldn't be able to take the other relationship seriously, and that wouldn't be fair for anybody.

I want to be able to call her and ask her to get together (in a completely non sexual way) to do something.  But I don't know how to go forward.  I feel like calling someone 5 years after you haven't spoken to them saying "Hey I've been thinking about you a lot" may be quite off-putting. 

I'm very genuine in this and willing to be completely transparent with her, I just want to be able to see her again if for nothing else than closure.  I'm not very socially adept though and am terrified that I could blow my chance to see her again with a few wrong words. 

This fear is all compounded by the fact that I don't make a ton of money, I'm a freelance graphic designer (I will note that I do get consistent work, just not a lot of hours) and still live at home with my mother (who is just lovely by the way).  I worry that the lack of success will be another deal breaker. 

So girls and girl savvy guys of reddit, what would you advise?
TL;DR: 
Liked a girl a lot in high school, she told me off 5 years ago, I want to get together with her but require tact in what I say due to the massive time gap.