You still drink like a frat boy, and hang with guys who do the same.
In college, it may have been cool to drink on school nights to the point of slurring, but at some point, you need to evolve. If you're still bragging about how many shots you can consume in an hour, your boys may think you're the man, but the women around you will be less than impressed.
If you're on the prowl and three sheets to the wind, you're sabotaging your chances of finding what you want. Women will see you as the perpetual party animal, not the guy she wants to cuddle with on the couch.