How to be a better boyfriend?

The one thing that's easy to do is to really LISTEN to her when she talks. From your description it sort of sounds like you're treating her as a possession or just a sex object. Sure we like to be worshiped and dressed sexy, but being a valued person is more important. So next time she's telling you an idea, just take the time to really LISTEN, and comment back to her so she knows you're getting it.