First, let us tell you what a woman who isn't in love with you will do when you get sick. She might feel bad for you, she might even send a 'get well' selfie or offer to drop some soup over to your house. But she probably won't do much more than that. After all, she has a busy week of work ahead of her, she can't risk getting sick too.
A woman who is really in love with you won't care at all about whether your illness is contagious or not. She won't just offer to bring some soup, she'll show up at your door with all of the ingredients and she'll make it right there for you. Let's not forget the best medicine: hugs, lots of hugs! She will have you back to full health in no time at all.