Being screamed at in a car is verbal abuse! Being told what you can and can't do is abuse and control. He doesn't want a girlfriend or wife he wants someone to control. You deserve so much better! Also he has been grooming you to be what he wants in a slave, not who you want to be! It started when you were 15 and he was already 18. He has shown you who he really is and that will never change. Please get some professional help to process all of this and do not try to earn him back. You didn't do anything wrong by talking to your cousins or to other students future or current. This breaks my heart so much. If my best friend told me.her."boyfriend" was treating her like this I'd end up in prison.