I'm quite sure it's a Shojo (Shoujo) Beat manga. It was about a girl who grew up with only bothers and ended up a major tomboy who can't control her rude outbursts. It's so bad she got kicked out of pretty much every school club. All she wants though is to make a friend that's a girl. So when she finds a club that doesn't kick her out the (seemingly) only guy member decides to help her get a girl friend.