Grapefruit no yôna onna: Sei ran no hibi (1981)

A stylist and jazz lover meets a jazz musician who plays exceptionally well at a live music venue, and they fall in love. For the woman, love means intensely desiring the other person to the point of suffocation every single second, and that's how they truly love each other. Then the man receives an offer for a long-term performance in New York. For a jazz musician, a New York performance is a dream. The man leaves. At first, the woman is almost driven mad by loneliness, but eventually she starts to try to distract herself from that loneliness with other men. It is then that she realizes she is pregnant with the man's child…