Firstly, adderall is actually a prescription drug for add, not depression, and although you have obviously read of some of the side effects which include weight loss, it is extremely dangerous when misused or used w/o a prescription. It is very addictive. I have heard of it being referred to as a soft version of cocaine. It mucks up ur system bad. Please talk to your doctor. Since you posted this in the eating disorder forum im assuming you hav a body image problem, which is the issue which should be addressed. Please do not abuse any kind of drug for weight loss. It is dangerous and will only cause you more problems in the end. If u truly are worried about your body as in health-wise, see a dietrition and be good to ur body. Maybe u could even find a counsellor in ur area to talk about self esteem issues. U said ur worried about ur boyfriend, but he obviously hasnt done anything to spark that worry, and is with u for who u r.
I hope u take my advise, it hurts to see this, I used to think exactly the same I hope ur well

xoxo