What should I do!? Or should I? (no i'm not killing anyone..or am i?..oh no)?

Oook well I've liked this dude for over two years at times I feel like I don't even need to waste my time liking him, but then I get all girly about just having a crush on him. So then yeah he knows that I like him or liked him, I don't really know cause I totally suck at being a girl with a crush on a dude, so now we hardly speak to each other (we used to work together) so now it's like "Hey! wana hang out?" & no response so I decided to just give him a piece of my mind cause people I did soooooooooooooooooo much for this foo'! I even had him for a cl last semester! I was the only one who gave him a birthday card AND who remembered his damn birthday he even told me TWICE I did so much more for this guy that I just wana tell him how much I did for him cause I liked him cause I didn't want to see him upset I wanted to see him smile hear his voice all that lovey dovey crap that you get when you like someone & now he doesn't even acknowledge that, he doesn't care he lead me on he just let me down :/ I guess liking him wasn't enough? Anyways idk why the hell I typed all of that but my real question is Should i text him and tell him how i feel how mad or sad i am or whatever this feeling is and forget about him once in for all or OR just feel like crap everyday and yeah just be a sad sad ******?