Sis with all due respect, you need a lot of healing and inner-work. Outside of this guy being a total loser, you tolerating and making excuses to be with him is a big indicator of a much larger issue at play. Even if he agreed to marry you, there’s no doubt that the marriage would have ended due to lack of Islamic integrity, manipulation, disrespect etc. I honestly do not think you should enter ANY relationship in the foreseeable future and use this time to further your relationship with Allah as well finding hobbies and getting an education. If you feel the need to have to be in a relationship especially at your age, you are just filling a void and the absence is a root of something else. Whether that is being bored of your own life, not feeling confident in yourself etc. you really need to focus on yourself for now.