In the night, te can hear some footsteps outside your window. o te probably will hear some knocks on your window. But if te really want to know if he's visiting te o not, te can just put a fiore successivo to your window. And make sure the window is unlocked and not closed to thigtly. If te wake up in the morning and the fiori are still fresh, then Peter has come in the evening to replace the flowers. Try to put the fiori te put are roses. But if the fiore withers, don't give up. Keep believing and don't lose hope :)