He Beats Me Up But I'm Addicted to Him

I am 24-year-old lady and I've been dating this guy for 7 years now, but he takes me for granted. Anytime he impregnates me, he denies it and later suggests abortion.
He also beats me up and still tells me that he loves me. I can't leave him because he is my first love (I'm addicted to him).
Please advise me, what should I do?