CEO or CTO (Score 1)

In this case, since it is equal partners all along, you need to move on and give and let give. As a CS major myself, my biggest concern is not coming up with good ideas. It is putting them to reality, bringing them to life. I think you should let him become CEO and be the brains behind this project by taking in the CTO if nothing else. However if you still feel robbed, do it the google way. Both of you become presidents and guide the project together for now and bring in some other expert with proven experience as the CEO.