A fruitarian diet is rich in fungus-food (i.e. fructose). What I’ll say about this, as the compiler of “The 12 Optimal Food Factors For Optimal Health”, is that the cells crave good fats-- hope that avocado and coconut are part of the fruit diet.  Candida can be a sexually transmitted disease via the prostatic fluid. First and foremost, it’s not about your catching it from him; it’s all about the strength of your immune system and your susceptibility. Your protection comes from your microbiomes (skin, lungs/nasal, oral, and of course gastro-intestinal). You will inevitably encounter yeast/fungus, well actually perpetually, so focus on your own microbiomes.  Start with your oral microbiome. Don’t use mouthwash, fluoride toothpastes, xylitol toothpastes, tea tree toothpastes, etc. as they kill your beneficial oral bacteria. Do the oil pulling (to get a fresh start, and then desist) and use a microbiome supportive toothpaste such as Revitin, or OraWellness. Now for something for him to do, he can take Pau d’Arco and do the diatomaceous earth/clay combo.