I need advice, quickly please?

My name is Tyler... I'm 25 and I currently work at Wal-Mart in the clothing department. Sure, it's not the most glamorous job, but I'm doing my best. I've been struggling with this ever since middle school to be honest. I need your help, now more then ever. A few months back, a new guy started working here in the same department. He's the first openly gay person I've met, and I can't stop thinking about him. I've been having these kind of crushes and "problems" ever since first grade at the least when I had a crush on a boy. I'm so embaressed. My parents and entire family are devout Christians... and they aren't exactly "open" to my feelings. I don't really have any friends, and as I said, talking to my parents is out of the question until I fess up to them. I need to tell my parents that I am, putting it blatantly, gay. I've been putting this off since High School when I finally came to terms with who I am. I need advice on how to do it though... and I also need advice on how to ask this guy out. Please. All I'm asking for is advice.