No benefit of the doubt in my book. This guy is not being respectful toward you at all and, given your history of abusive relationships, you need to be with someone who respects you from day one. Your gut is telling you he is not good for you...trust your gut and end the relationship. Whether or not it is only for sex, the intent is to feel good...about yourself and who you are...don't let anyone cause you to doubt yourself. Getting out of an abusive relationship and fighting anorexia means you are stronger than you think.