For thousands of years, guys have been blaming their Neanderthal, hedonistic behavior on their genetics. They say the way they think and act is not their fault, and it's all predetermined because of the seeds of their forefathers. They rationalize their behavior by relating it to the role of the caveman back in the Stone Age. Back in that period of time, one of the caveman's major responsibilities was to be the provider, and the main way he did that was by hunting for food. For many of these cavemen, the adrenaline they experienced became more intoxicating than the feeling they got from providing for their loved ones. Unfortunately, when backed up by science, there is no "caveman genetic marker" that allows men to act like animals and do what they want without considering how their decisions affect the women in their lives. As a one-time caveman who was pretty good at living a hedonistic lifestyle , I can understand this mentality. It's pretty good for a short-term adrenaline rush and a major ego boost. Unfortunately, this short-term rush rarely leads to long-term happiness and fulfillment. As a convenient way of rationalizing their behavior, many cavemen also look to nature to support their behavior. However, there is a major flaw in this argument. Human beings are creatures of evolution with minds that think and process. Animals, on the other hand, are driven primarily by two major instincts: survival and reproduction. Human beings — because of their diverse and complicated nature — have sex for a multitude of reasons. And using the argument that men are simply allowed to have sex with whoever, whenever they want because they're men is just plain dumb … and ignorant. For many of these guys, blaming their behavior on their genetic makeup is just an excuse for the caveman behavior. Again, I understand this rationale. It served me well for many years .. until I finally realized that my behavior and actions had consequences for myself and others. And that is the biggest difference between a caveman and a real man. A real man takes responsibility for his words and actions, and he realizes that justifying abnormal and irrational behavior and treating women like objects just so he can get laid is bullsh*t! Keep reading ... More dating advice from YourTango: /node/99473 /node/115982 /node/57399 If you're a woman and you want to have a long lasting, happy and fulfilling relationship , I suggest you become aware of the three danger signs that reveal a guy is a neanderthal who is only interested in you as his next conquest … 1. Moves too fast . For a caveman, the game is all about the excitement of the hunt and the adrenaline of bagging the "prize". Once he captures his victim and the excitement wears off, he is off to hunt again. 2. Focuses on sex . Sex is an important part of a healthy relationship between a man and a woman, but when a guy is focused on sex and isn't showing you that he has the ability to be a good partner outside of the bedroom, he is clearly demonstrating that he has some evolving to do. 3. Sudden behavior changes . When a guy's behavior suddenly changes from hot to cold, it is a tell tale sign that emotionally he is stuck in the Stone Age. There comes a time in a guy's life where there is a rite of passage when he ultimately becomes a man. In fact, many religions and cultures often have ceremonies and events which celebrate this time. Unfortunately, those guys who never go thru this rite of passage emotionally never grow up and evolve into a responsible and mature adult male. If you would like to have a happy and fulfilling relationship, it would serve you best if you avoided those guys who consistently exhibit any of the above danger signs. Because if you don't, it won't be his fault … it will be yours! Joe Amoia, The Smarter Dating Guy, is the founder and creator of SmaterDatingForWomen.com . For more information, visit him online, and while there, make sure to grab a free copy of his latest e-book, The ABCs Of Smarter Dating; 26 Tips & Strategies to Immediately Improve Your Love Life!