Coercion using the other person's affection as a weapon is a nasty game. Don't play. Now if you love everything else about this guy, and you don't think he's wielding your love as a weapon, and you think that your health is less important than being with him, then by all means, stay where you are.
Torquoisepassion, I wish I'd had your sense of self and strength when I was a young woman. It would have saved me years of grief.
"Right is right, even if no one is doing it; wrong is wrong, even if everyone is doing it." - St. Augustine