Would you use classmates.com or reunion.com to contact an old flame?

I found someone that I was very much in love with 20 years ago. By finding the last name she goes by now I am assuming she is divorced. Phone and address is in her name. Who would try and contact this person and what guidelines would you follow?

Would you use classmates.com or reunion.com to contact an old flame?
The answer to that I'd say yes but if u want to do that I say go for it! :)

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