Hello, I'm Debora K. and my character is Selby Carlisle, a fairly conservative Southern girl who might be right up Jim's alley if he needs to be seen with someone who would keep the illusion going that everything in the Henley life is quite "normal."
Selby is a fan of the equestrian team and goes to all the competitions, is on the swim team with Jim's roommate Alex, and is active in Greek life at Ainsworth. They could have met through any or all of these activities.
Unfortunately, I cannot use AIM, but would love to plot with you via IJ's PM system or email, or in comments. :-)