Drugs seem to be the theme of this topic so if he feels he can do drugs and you can't then maybe you need to get your life straighted out like keephope said and if he is still there and willing to control his drug use then it was meant to be. As the old saying what is good for the goose is good for the gander in other words if he can take drugs then why can't you take perscription drugs that help you cope in life.
I often wonder the same thing about my relationship. I met him when I was sixteen... about the same time a lot of other things in my life started going wrong, but I know i have been chemically off since age 11....I hate going to the doctor where they give me some crappy antidepressant which not only doesn't work, but makes me feel worse. If the anti-depressants worked for you girl...I say take them. Nothing to be ashamed of....I wish I could find something that actually worked for me. Broken leg = cast.....broken heart/mind/hormones = medicine. I wish you the best of luck in deciding what is best for you. Get yourself right and then you can work on your relationship.
Good grief woman! If you need prozac, or any other anti-depressant, then you should take it! You can't let anyone else's opinion stand in the way of your health. Get back on the meds first, and then evaluate where your relationship stands.