Life is a risk. You have to take the risk and let them know how you feel.
You sitting back doing nothing will bring you nothing. At best, you don't get hurt, but you also stand the chance of your love going with someone else.
For all you know, they might feel the same (it's a possibility) and if they don't, you can always take the chance of getting time to fall in love with you.
Please go right ahead and tell your love how you truly feel.