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psychology immediately comes to mind.
You'll learn a lot about human nature if you major in psychology, but, take it from me, it won't open many doors for you in the working world. I majored in psychology, and all the people I know from my graduating class are having a difficult time getting great jobs. Don't try to pick a major that's going to enhance your game; pick one that's going to find you a good job. You want something that's either going to give you a lot of room for advancement or allow you to open your own business.
I'd recommend going health (science background), business, or economics. You'll open up a lot of doors with a degree in any of those fields. You should plan on going to graduate school, as well. It's getting competitive out there, and it takes a lot more to be really successful. Everyone I know who makes a lot of money either went to a high-tier private college and got a good degree, or has a master's.
Having a successful career will boost your game a helluva lot more than just taking some major. It'll give you great confidence, and you won't have to make up stories to try and sell yourself. When women see you roll in with classy wear and a nice watch, they'll know you're the sh*t.
Believe me, all the hottest girls are going to be taking majors like English, Women's Studies, Political Science, etc. anyways. I REALLY suggest against taking a major just for the girls. They might be interesting to learn, but good luck trying to get anything $80K/year once you graduate.