I have a roommate that I'm thinking of getting kicked out of my apartment.
That doesn't seem kind, is there a reason why you want your roommate to be kicked out?
I'd rather live here with my girlfriend and my roommate takes up too much space.
Wanting to live with your girlfriend is fine and fair, but getting your roommate kicked out isn't kind and it might backfire with your landlord.
I'll figure it out.
Leases are legal agreements and going against them might bite you back. If you want to live with your girlfriend then I'd suggest paying out your term and then finding another place to live with your girlfriend. Additionally, adding your girlfriend to the lease might be an option, so long as your roommate is cool with it.