My girlfriend got accepted to GT in 2007, and after watching my first few Tech games in BDS that year, I was hooked. The UGA loss that year made me hate the Dawgs more than any other team.
Sadly, that wasn't when I reached full-fledged fandom... I grew up a Clemson fan since I had lots of family that were Clemson alum. I went for Clemson when GT played them in 2007, wearing orange in BDS (an action that I deeply regret, yet have fully compensated for)
In 2008, I abandoned my Clemson fandom, realizing I really didn't do anything to support Clemson except root for them on TV. My girlfriend was a speck of gold in a sea of orange at the GT/Clemson game in 2008. Realizing I wanted Tech to win more than I did Clemson, I said to myself "what the f*** am I doing?"
I took off my orange polo (I had a white undershirt) and rooted for Tech whole-heartedly. I consider that day, October 18, 2008, the day of my ascension to full-fledged Ramblin' Wreck.
Just to let everyone know, I now take joy in watching Tech beat Clemson, but I'll still root for em except in situations in which their losing benefits GT in any way.