What's your internet "white whale", something you've been searching for years to find with no luck?

When I was 13 I met this girl at a summer camp. We spent all of the summer together talking about everything, playing games, and sneaking out of our cabins to go star gaze. The camp lasted 3 months and I can't remember 5 minutes that I didn't spend with her. Her dad was one of the counselors at the camp and I got along with him great too, he would take us out fishing during cleaning time and even sneaked us out one night to go ATV riding. When camp came to an end he gave me their phone number, email and home address so I could stay in touch. We spoke/wrote everyday for over 2 years and when possible we would visit each other(we lived a good distance apart), then one day... nothing. Noone answered the phone, emailed  back or even replied to a letter. 5 months later I got my license, left the next Friday after school and drove for a total of 15 hours to her house just so I could know what happened. I got to their house around 1pm on Saturday and there were no cars, I still went up and knocked a few times but no answer. I knew where her dad worked so I drove there and asked if he was around, his boss said "they up and moved" but she never mentioned moving anytime we talked. I asked if he new why or where to, but he kept saying he had no idea. I ended up driving to everyone in town I thought might know them but no one would knew where they moved to. I was so upset I went back to her house and broke in thinking I would find a clue or something. The house was empty except for big furniture and dust. I went up to her room to look around some more, in there all that was left was her bed and study desk that we had carved our names into. I sat on the bed and looked at the desk, I got this huge lump in my throat when I saw that my name had been scratched out. I just remember smashing the desk and crying until the cops showed up. They asked me what was going on, probably thinking I was on drugs or somthing, and I just started spilling my heart out to them. I told them I should have said I loved her, I should have come over sooner and on and on. They felt so bad for me they let me go home without a single charge against me. It's been 7 years and even with Facebook and Google I still can't find a trace of them. I even went back to the camp that year to find anything out, still nothing. I guess there was this suspicion back at her school that her dad was in Witness Protection, they showed up mid year and almost never talked about anything from before they moved there unless pressured to, and even then it sounded rehearsed. If that is true I feel stupid for never catching it in any of our long talks or anything.

I know this sounds like a bad drama but hey, I guess the cliche had to come from some truth.

TL;DR Boy meets girl at camp, boy stays in touch with girl for a couple years, girl suddenly disappears one day, boy realizes he loves girl, boy goes looking for girl but never finds her, girl may have been in Witness Protection.

/r/AskReddit Thread