Coming out??

I would have not consider my self as gay I have always thought to be fully straight. I’m 18 and have only had 1 girlfriend for a mouth a couple years ago. Recently at work I have formed a crush on a guy. The guy is openly gay and we get along in a friend wayI don’t have any where to seek advice on what to do considering all my straight friends would be more then shocked and my parents are super Christian. I’ve been confused and pondering on it for a few weeks now. Any word of advice would be great.