Better Than Chocolate (1999)

Not long after moving into her own place, Maggie finds herself with two unsolicited roommates: her recently divorced mother, Lila, and her young brother. The timing is especially bad, considering Maggie has fallen hard for an attractive woman, Kim, only hours before they move in. What could be a nonissue becomes increasingly complicated -- since Maggie's family is unaware of her sexual orientation, and Maggie is not open to sharing that information.