crushing hard

i've had a crush on this guy i work with for like 2 months now... i am never one to get nervous but around him i just can't help it i get so nervous i literally want to say "kiss me already" but instead i get nervous and repeatedly say "hey what's new" i'm like 90% sure he likes me back but should i say something? should i make the first move or ask him out? i've never asked someone out before but i do believe girls can do anything guys can do so why not.... i just don't know how to bring it up... and what if i'm reading all of the signs wrong and he turns me down? i feel like i'd be more upset than i should be if he says no to go out with me... ADVICE PLEASEπŸ™πŸ»πŸ™πŸ»πŸ™πŸ»πŸ™πŸ»