How do i fake kiss? help meee!!!!!!!!?

i'm in year 10 and i got the part of romeo in the school play of Romeo and Juliet. now let me make this clear i am a girl. i look like a girl. i think.....and i go to an all girl school. that means i have to kiss the girl playing Juliet....soooo does anyone know how i can make it look real without actually doing it. it has too look sweet not disgusting. help please!!!!!!!!!!!!!!!!!