Ive got a BIG crush on you

I am a girl who has a crush on a guy i met two years ago and just recently told him how I felt about him but I dont think im worthy enough to be his and recently his best friend told me he has a new gf, but I'm not sure if they are together or not....but despite all that I still have feelings for him, when i think of his smile,his eyes,his hair, his voice, his face i start to smile and also get butterflies in my stomach. I need advice on what I should do???