It's official, we're all going to repeat our sexual history again, and again.\nTake comfort in knowing that your habits may be out of your control this Valentine's Day.\nA study came from Gonzalo Quintana Zunino, Ph.D. candidate in the behavioural neuroscience of sex from Concordia University has been published, and is revealing sexual habits in humans.\nEditor's Choice: These Are The Cheapest Cities To Rent In If You're Done Being Broke In Toronto\nIt was shown that male rats can actually be trained to prefer a female rat with a neutral odour cue — like perfume.\nWhen paired often enough, the male rat will learn to prefer the perfumed female to any other unscented female.\nIn the study, the male rats were tested for companion preference. They were allowed to copulate freely with two females: one with perfume, and the partner from their first romp in the sheets.\nWhat does this mean? Male rats can be taught to develop a preference for a current partner, but once they were presented with an option of their first partner, many reverted back to what they knew from their first.\nIn other words, your first time experience could interfere with a learned preference.\nThis study proves that we are creatures of habit, even when taught not to be. Maybe this is why we tend to pick the same type of lover based on a "type" from our prior sexual encounters, or our first loves.\nWhat was found was that the male rats did not show any preference for their current pairing — the rat with perfume — and preferred their "first-time" partner.\nThis suggests that a first sexual experience can have a profound effect on partner preference.\nThey investigated further by swapping the perfume cues for rat lingerie (yes, you read that right!) and similar results came forth with the rats preferring their first partners — wearing jackets — over the rats that were rocking a birthday suit.\nThe way rats interact with sex is similar to how we human people do, and this experiment shows us that we learn to associate sex with a variety of cues, including clothing, scent, etc.\nThis also indicates that fetishes are at the base of the same learning mechanisms, and impact our sexual preference as well.\nClick here for more on this study.