Cat People (1982) on Netflix

Irene Gallier, a beautiful young woman is on the bridge of sexuality; she discovers love for the first time only to find that the explosive experience brings with it tragic results. However, the tremendous passion of this girl's first romantic love is so strong, it bypasses the terror around her - including her brother's unusual demands - as it pushes her on to her own bizarre destiny. Desire... passion... blood, her lust transforms her into one of the Cat People.