L'Escalier by Frédéric Mermoud
An adolescent girl discovers her first amorous emotions. Parts of her days take place in a stairwell. It is there that she says goodbye to her boyfriend before returning home; it is also there that she meets her girlfriend.
Fitted on this compilation of shorts:
http://www.artfilm.ch/shortcross04.php?
If any decides to buy, do it from artfilm.ch because their dvds contain english, french and/or german subs.