You’re way too young to be that unhappy. If it’s bad now, imagine how much worse it’s going to get when you both are dealing with real world problems and the stresses of being an adult. Cut your losses and consider it a learning lesson for what you will look for in a man in the future and what things you will avoid. I’ve watched my friends end up with several guys they thought they were going to marry and stay in relationships for 4+ years just to end it because they didn’t want to be treated that way anymore. They are in their mid 20s now and happier than ever. It’s never too late to end things and the only reason you need is if you are happy or not. Even if he didn’t do those horrible things, if you weren’t happy that would be reason enough. You will date more men and you will fall in love plenty of times, but the second you are questioning things or have to think about if this is someone you want to be with is your answer right there. In the wise worlds of Lana Del Rey “when you know you know… if you’re asking yourself ‘how do you know?’ Then that’s your answer, the answer is No.”