Let me get this straight--(giggle at straight) This guy gay at your cooking school was, in a way, trying to hit on you, atleast you thought so, so you acted close-minded and rude? And then you developed a crush and confronted yourself with your sexuality, which caused depression and you went back home. Hope I got that right. If so, I hope you don't have a hard time accepting yourself. If you really want to change, then there are help organizations and churches, if you feel strongly enough. But the most important this is that you must accept yourself, going through life hating yourself is not gonna make it easy. I'm not saying this will happen overnight, in time you'll figure out for yourself.