forbidden love with the man of my dreams

Okay so I moved departments in my job at the beginning of summer. I met a guy that I'd known since I started working there but never really talked to because we never saw each other. I've talked to him and gotten to know him better of the past 6 months of moving. I'm head over heels for this guy he's my perfect type, intelligent, sarcastic, funny, exciting, handsome, tall, successful, and so much more. I want to know what he thinks I me so bad but I'm so afraid of telling him. There's just so many things that could go wrong. What if he doesn't like me. He's 26 and I'm 19 which doesn't bother me but what if he sees me as a child? What if he tells my coworkers (who have the mental maturity of a 5 year old)? They'd never let me live it down. I don't date people I work with but for him I'd make the exception. Any tips on what to do I can't stop thinking about him or get rid of these feelings no matter how hard I try. I don't know if I should tell him and take a risk or just keep trying to make the feelings stop. Send help.