Kisses

Don't let me kiss you, if it could be replaced by someone's in the future

Don't let me kiss you, if it was meant to be forgotten by tomorrow

Don't let me kiss you, if you weren't prepared to be with me for good and all

Don't let me kiss you, if you don't love me

Don't let me kiss you, if you just need it when you feel lonely

Don't let me kiss you, if you are not brave enough

Don't let me kiss you, if you feel uncomfortable staying with me

Else, kiss me :P