I have a problem but I work with this guy and I really like him and I have told him how I feel but he hasn't said anything about it but he still talks to me like before I told him.He is so cute

Just ask him out on a date

How old are you?
You've told him how you feel, but he did'nt reply,short of asking him out and see if he's up for a date,there isn't a lot more you can do.

I would recommend thinking this through,while its true that many work relationship turn out fine,there are those that end in disaster.

If it does not work out,you still have to work together.

Maybe he's shy, especially if he's only a teenager. How old are you?