Advice pleaseeee

My boyfriend and i argue constantly and i always feel like he doesnt trust me, he always checks my location on snapchat and gets mad if i turn it off, i go to school so obviously im not doing anything behind his back, i never have. i dont know what to do anymore and i dont want to leave him. im just tired of arguing over it and him telling me he'll stop yet never does. things need to change and its obvious that hes not going to take charge so i want to, but i dont know how. Help??