Someone tell me why the fuck my boyfriend thinks it's okay to not spend any time with me, to not…

Someone tell me why the fuck my boyfriend thinks it's okay to not spend any time with me, to not even have a conversation with me, to always have his face in his phone, but he thinks I'm gonna be okay with him going to the basketball court to play basketball with his friends. He can't even play basketball anyways. He plays more along the lines of throw the ball and chase it on the ground till he gets it. I'm not okay with you completely ignoring me that last three days so I will be going to my room and locking my door.