What would be some reputable sites that I can find out what makes your chemical balance or imbalance triggers the mind towards the opposite sex
Since body chemicals (e.g., hormones) are in a constant state of flux, it is hard to tell exactly what is a balance (homeostasis). In both men and women, testosterone levels (along with other hormones) effect the level of sex drive. You might want to change your hypothesis (other post) to restrict it to specific chemicals and "triggers the mind" to something more empirical (something that can be measured more effectively).
I searched Google under the key words "chemical balance 'sex drive'" to get these possible sources:
http://en.wikipedia.org/wiki/Pheromone
http://www.noroomforcontraception.com/Womens-Health/Harms-Contraception-008.htm
http://www.hurriedwoman.com/syndrome.html
http://www.abuse-recovery-and-marriage-counseling.com/articles/medications/imbalance.html
http://www.medhelp.org/forums/mentalhealth/messages/30600.html
http://onlineallergycenter.com/blog/?p=60
http://www.webmd.com/migraines-headaches/news/20060614/migraine-sufferers-are-they-sexier
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.
I hope this helps. Thanks for asking.