i just googled and yep, your lack of interest in sex is definitely a side effect of that medication.

i know that's not gonna help you, but at least you can pin down your low sex drive to it.

therre's a heap of stories here http://ask.metafilter.com/137381/Can-my-libido-recover-from-two-months-of-Zoloft from men and women who have the same problem.