"The Incredibly True Adventure of Two Girls in Love" (1995) is a very cute and sweet romantic comedy about lesbian teenagers.
It's by Maria Maggenti whom you might know as the director of Puccini for beginners and it stars Laurel Holloman whom you might know as Tina Kennard from The L Word.
it is VERY 90s and features a lot of riot grrl music on it's soundtrack.