Just get out and meet people. College is about meeting new people and trying new experience. Once you get out in the real world you will learn that the level of social interaction on campus is severally different. So take advantage of what you got and just have fun.

As for places with a lot of girls try: ballroom dance club (or any dance club) and you don't have to be a good dancer, in fact you can the cute ones to give you individual tutoring. service clubs, multicultural clubs.